Can you provide me with scholarly articles on Diego Rivera and the "Man at the Crossroads"mural, and information on debatable topics regarding
I'll be pleased to direct you to suitable information resources that will help you to research and complete your project.
You're researching within the field of art history, so art article databases will be most helpful for you, but some of the interdisciplinary, general subject databases will also be helpful. Here are the databases, which you can find linked from the Library's home page, I recommend:
ART Full Text
Academic Search Premier
Latino American Experience
I suggest you start by searching the following: "Diego Rivera" and "Man at the Crossroads" in order to get articles that contain both terms.
So far as books, I noticed that we have one book that contains both terms:
Lastly, you can get digital images of the artwork via the ARTstor database.
If you're interested in learning about controversial issues related to Diego Rivera, you should read his biography. You can find several through the Gale Virtual Reference Library database, or the Oxford Art Online database.
If you have any problems, come to one of the campus library Reference Desks to work with a librarian.