diff --git a/Makefile b/Makefile
index ed10c20..f2e5977 100644
--- a/Makefile
+++ b/Makefile
@@ -56,11 +56,15 @@ preview: $(CONDA_ENV)/envs/eo-datascience $(CONDA_ENV_DIR) $(KERNEL_DIR)
 	$(CONDA_ACTIVATE) eo-datascience
 	- mkdir -p _preview/notebooks
 	python -m pip install -e .
+	cp ./chapters/references.bib ./_preview/notebooks/
 	wget https://raw.githubusercontent.com/TUW-GEO/eo-datascience-cookbook/refs/heads/main/README.md -nc -P ./_preview
+	wget https://raw.githubusercontent.com/TUW-GEO/eo-datascience-cookbook/refs/heads/main/_config.yml -nc -P ./_preview
 	wget https://raw.githubusercontent.com/TUW-GEO/eo-datascience-cookbook/refs/heads/main/notebooks/how-to-cite.md -nc -P ./_preview/notebooks
+	wget -O - https://github.com/TUW-GEO/eo-datascience-cookbook/archive/main.tar.gz | tar xz -C ./_preview/notebooks --strip=2 "eo-datascience-cookbook-main/notebooks/images"
 	render_sfinx_toc ./_preview
 	clean_nb ./notebooks ./_preview/notebooks
-	jupyter-book build ./_preview ; jupyter-book build ./_preview
+	jupyter-book build ./_preview
+	jupyter-book build ./_preview
 
 clean:
 	rm --force --recursive .ipynb_checkpoints/ **/.ipynb_checkpoints/ _book/ \
diff --git a/src/eo_datascience/clean_nb.py b/src/eo_datascience/clean_nb.py
index 4554bd3..1668ae5 100644
--- a/src/eo_datascience/clean_nb.py
+++ b/src/eo_datascience/clean_nb.py
@@ -1,4 +1,3 @@
-import os
 import nbformat
 from pathlib import Path
 import re
@@ -45,11 +44,12 @@ def convert_bibliography(nb_path="./notebooks/references.ipynb", out=None, save=
     nb_path = Path(nb_path)
     if nb_path.exists():
         nb = nbformat.read(nb_path, as_version=4)
-        nb.cells[0].source = """# References
-
-    ```{bibliography}
-    ```
-    """
+        nb.cells[0].source = \
+"""# References
+```{bibliography}
+:style: plain
+```
+"""
         # Save the notebook
         nb_path = substitute_path(nb_path, nb_path.parent, out)
         if save:
@@ -97,12 +97,10 @@ def convert_refs(dir="./notebooks", out=None, save=True):
         # Load the notebook
         nb = nbformat.read(nb_path, as_version=4)
         for i in range(len(nb.cells)):
-            if i != 0:
-                if nb.cells[i]["cell_type"] == "markdown":
-                    nb.cells[i].source = quarto_ref_figure_replace(nb.cells[i].source)
-                    nb.cells[i].source = quarto_ref_person_replace(nb.cells[i].source)
-                    nb.cells[i].source = quarto_ref_time_replace(nb.cells[i].source)
-            nb
+            if nb.cells[i]["cell_type"] == "markdown":
+                nb.cells[i].source = quarto_ref_figure_replace(nb.cells[i].source)
+                nb.cells[i].source = quarto_ref_person_replace(nb.cells[i].source)
+                nb.cells[i].source = quarto_ref_time_replace(nb.cells[i].source)
 
         # Save the notebook
         nb_path = substitute_path(nb_path, dir, out)