This guide is based on the VIC164 research assignment which starts with selecting a modern or postmodern work from the AGO's Collection).
For detailed entries/articles on the specific style, movement, theme, or a group of artists that your selected artist was associated with (e.g., cubism, abstract expressionism, etc.) look up that term in the various reference sources listed below (in some cases, you will need to use the index for the e/book).
Analyses of the artist's work, or more broadly of the movement they have been associated with can also be found within scholarly journals about visual art/culture. To search for articles, navigate to the "Scholarly journal articles" section of this guide (see the sections menu at left, or above if viewing this guide from within the Quercus course).
Note: It's possible there is no detailed analysis of the specific work that you selected, but it's perfectly valid to extend the critique or reception of similar works by the same artist to the work you are focusing on for your assignment.