diff --git a/docs/source/_rst/_code.rst b/docs/source/_rst/_code.rst
index 1516994..46f6906 100644
--- a/docs/source/_rst/_code.rst
+++ b/docs/source/_rst/_code.rst
@@ -26,6 +26,7 @@ Trainer, Dataset and Datamodule
     Trainer <trainer.rst>
     Dataset <data/dataset.rst>
     DataModule <data/data_module.rst>
+    Dataloader <data/dataloader.rst>
 
 Data Types
 ------------
diff --git a/docs/source/_rst/data/data_module.rst b/docs/source/_rst/data/data_module.rst
index b7ffb14..9bbf827 100644
--- a/docs/source/_rst/data/data_module.rst
+++ b/docs/source/_rst/data/data_module.rst
@@ -2,14 +2,6 @@ DataModule
 ======================
 .. currentmodule:: pina.data.data_module
 
-.. autoclass:: Collator
-    :members:
-    :show-inheritance:
-
 .. autoclass:: PinaDataModule
-    :members:
-    :show-inheritance:
-
-.. autoclass:: PinaSampler
     :members:
     :show-inheritance:
\ No newline at end of file
diff --git a/docs/source/_rst/data/dataloader.rst b/docs/source/_rst/data/dataloader.rst
new file mode 100644
index 0000000..fa6bae5
--- /dev/null
+++ b/docs/source/_rst/data/dataloader.rst
@@ -0,0 +1,11 @@
+Dataloader
+======================
+.. currentmodule:: pina.data.dataloader
+
+.. autoclass:: PinaSampler
+    :members:
+    :show-inheritance:
+    
+.. autoclass:: PinaDataLoader
+    :members:
+    :show-inheritance:
\ No newline at end of file
diff --git a/docs/source/_rst/data/dataset.rst b/docs/source/_rst/data/dataset.rst
index b49b41d..eaf86c7 100644
--- a/docs/source/_rst/data/dataset.rst
+++ b/docs/source/_rst/data/dataset.rst
@@ -7,13 +7,5 @@ Dataset
     :show-inheritance:
 
 .. autoclass:: PinaDatasetFactory
-    :members:
-    :show-inheritance:
-
-.. autoclass:: PinaGraphDataset
-    :members:
-    :show-inheritance:
-
-.. autoclass:: PinaTensorDataset
     :members:
     :show-inheritance:
\ No newline at end of file
diff --git a/pina/data/dataloader.py b/pina/data/dataloader.py
index 9bfec54..b8d4a63 100644
--- a/pina/data/dataloader.py
+++ b/pina/data/dataloader.py
@@ -163,6 +163,7 @@ class PinaDataLoader:
     ):
         """
         Initialize the PinaDataLoader.
+
         :param dict dataset_dict: A dictionary mapping dataset names to their
             respective PinaDataset instances.
         :param int batch_size: The batch size for the dataloader.
@@ -172,6 +173,7 @@ class PinaDataLoader:
             "common_batch_size", "separate_conditions", and "proportional".
         :param device: The device to which the data should be moved.
         """
+
         self.dataset_dict = dataset_dict
         self.batch_size = batch_size
         self.num_workers = num_workers
@@ -209,6 +211,7 @@ class PinaDataLoader:
         """
         Compute an appropriate batch size for the given dataset.
         """
+
         # Compute number of elements per dataset
         elements_per_dataset = {
             dataset_name: len(dataset)
@@ -281,6 +284,7 @@ class PinaDataLoader:
     def __len__(self):
         """
         Return the length of the dataloader.
+
         :return: The length of the dataloader.
         :rtype: int
         """
@@ -293,6 +297,7 @@ class PinaDataLoader:
     def __iter__(self):
         """
         Iterate over the dataloader.
+
         :return: Yields batches from the dataloader.
         :rtype: dict
         """
diff --git a/pina/data/dataset.py b/pina/data/dataset.py
index 9448511..c8d309b 100644
--- a/pina/data/dataset.py
+++ b/pina/data/dataset.py
@@ -17,16 +17,13 @@ class PinaDatasetFactory:
     """
     Factory class to create PINA datasets based on the provided conditions
     dictionary.
-    :param dict conditions_dict: A dictionary where keys are condition names
-        and values are dictionaries containing the associated data.
-    :return: A dictionary mapping condition names to their respective
-        :class:`PinaDataset` instances.
     """
 
     def __new__(cls, conditions_dict, **kwargs):
         """
         Create PINA dataset instances based on the provided conditions
         dictionary.
+
         :param dict conditions_dict: A dictionary where keys are condition names
             and values are dictionaries containing the associated data.
         :return: A dictionary mapping condition names to their respective
@@ -92,6 +89,7 @@ class PinaDataset(Dataset):
     def __len__(self):
         """
         Return the length of the dataset.
+
         :return: The length of the dataset.
         :rtype: int
         """
@@ -134,6 +132,7 @@ class PinaDataset(Dataset):
     def update_data(self, update_dict):
         """
         Update the dataset's data in-place.
+
         :param dict update_dict: A dictionary where keys are condition names
             and values are dictionaries with updated data for those conditions.
         """