At the end of each module, you will find a "REFERENCES" page which lists articles, full books, excerpts, papers, or hyperlinks with a short explanation of why they could be interesting for you. You are not required to study the listed items. You will be able to answer the final quiz questions just following the videos. That being said, the REFERENCES are made available to you in case you would like to pursue any topic you found interesting.

You can find the complete list of the references in the following document: