Fine arts and art history publications tend to be uniform in their use of the citation styles found in The Chicago Manual of Style .
Notes represent a more sophisticated method of citing one's sources.
Notes are absolutely necessary not only when directly quoting a published source, but even when you borrow a fact, statistic, or idea from another source and restate it in your own words. To not do this is plagiarism. Annotation does not mean numbering your sources once at the back or bottom of your paper, and just referring to these numbers over and over again. It means that each time you cite a source no matter how many times you cite it you must add a new note number and cite the same source again. However, once you've numbered these citations, you will then organize the source's material slightly differently in the notes than you will in the bibliography.