Richard Popkin, philosophy with students

Chicago citation style
Crosby, Harry W., 1926. Richard Popkin, philosophy with students. 1966. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb7509820z. (Accessed December 19, 2018.)
APA citation style
Crosby, Harry W., 1926, (1966) Richard Popkin, philosophy with students. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb7509820z
MLA citation style
Crosby, Harry W., 1926. Retrieved from the Digital Public Library of America <https://library.ucsd.edu/dc/object/bb7509820z>.
Note: These citations are programmatically generated and may be incomplete.