Kallen, H. M. (1971). What I believe and why--maybe: Essays for the modern world,. New York: Horizon Press.
Чикагска система за цитиранеKallen, Horace Meyer. What I Believe and Why--maybe: Essays for the Modern World,. New York: Horizon Press, 1971.
MLA формат за цитиранеKallen, Horace Meyer. What I Believe and Why--maybe: Essays for the Modern World,. New York: Horizon Press, 1971.
Внимание: Тези цитати може да не са 100% точни.