Stern 1969, p. 357. "I left the Communist Party. I did not leave my past, the friendships, just like that. Some continued for a while." Stern, Philip M. (1969). The Oppenheimer Case: Security on Trial. New York: Harper & Row. OCLC31389.
Streshinsky & Klaus 2013, pp. 93–94, 97–98. Streshinsky, Shirley; Klaus, Patricia (2013). An Atomic Love Story: The Extraordinary Women in Robert Oppenheimer's Life. New York: Turner Publishing. ISBN978-1-61858-019-1. OCLC849822662.
Stern 1969, p. 357. "I left the Communist Party. I did not leave my past, the friendships, just like that. Some continued for a while." Stern, Philip M. (1969). The Oppenheimer Case: Security on Trial. New York: Harper & Row. OCLC31389.