The reference section is typically 15 to 20 pages long. It lists all of the references you included in your thesis in APA format. The APA format is critical because mistakes in this section indicate to the reader that the overall work may be of low quality. Avoid being judged by your references!
The following videos and handouts will help you with your discussion section:
APA Example References Explained (5:31)
How to Find the doi Number Quickly (3:14)