If you are having a hard time getting started, or run into a road block with your topic get direct help! Schedule a Research Consultation with your subject librarian to get one-on-one assistance.
Need ideas?
Encyclopedias & Dictionaries are a great start to get ideas. They often have a bibliography that can point you to more resources as well.
Below are just a few reference books on art. Note that you can also get into this topic from another direction, such as the theme or individual you want to discuss.
1957. Woman in Green Sweater. Dayton Art Institute