APA (7th ed.) Citation

Laubach, F. C. (1943). The silent billion speak (4th. print.). Friendship Press.

Chicago Style (17th ed.) Citation

Laubach, Frank C. The Silent Billion Speak. 4th. print. New York: Friendship Press, 1943.

MLA (9th ed.) Citation

Laubach, Frank C. The Silent Billion Speak. 4th. print. Friendship Press, 1943.

Warning: These citations may not always be 100% accurate.