Vidich, Arthur J. (2009). "First Years at The New School" (PDF). With a Critical Eye: An Intellectual and His Times. Knoxville, TN: Newfound Press. p. 370. ISBN978-0979729249. Diarkib daripada versi asli (PDF) pada Disember 25, 2013.
wikipedia.org
en.wikipedia.org
Vidich, Arthur J. (2009). "First Years at The New School" (PDF). With a Critical Eye: An Intellectual and His Times. Knoxville, TN: Newfound Press. p. 370. ISBN978-0979729249. Diarkib daripada versi asli (PDF) pada Disember 25, 2013.
