A quick google search should bring up any number of other sources on your artist. One source you should not use is wikipedia. It's good if you want to get a quick overview of the movement or social issues the artist engages with, but it cannot be one of your main sources. If you do look at wikipedia, check out the citations at the bottom of the page and follow the links to primary sources of information.
If you are unsure how to cite, websites like http://www.easybib.com/ can generate bibliographies quickly. Also, the SRJC Writing Center is a great resource if you need help: https://english.santarosa.edu/writing-center.
