Jackson Pollock and Lee Krasner in front of his work

Chicago citation style
Zogbaum, Wilfrid, 1915-1965. Jackson Pollock and Lee Krasner in front of his work. ca. 1950. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_962&repo=DPLA. (Accessed December 10, 2018.)
APA citation style
Zogbaum, Wilfrid, 1915-1965, (ca. 1950) Jackson Pollock and Lee Krasner in front of his work. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_962&repo=DPLA
MLA citation style
Zogbaum, Wilfrid, 1915-1965. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_962&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.