APA (7th ed.) Citation

Coffin, H. S. (1970). What men are asking: Some current questions in religion. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Coffin, Henry Sloane. What Men Are Asking: Some Current Questions in Religion. Freeport, N.Y.: Books for Libraries Press, 1970.

MLA (9th ed.) Citation

Coffin, Henry Sloane. What Men Are Asking: Some Current Questions in Religion. Books for Libraries Press, 1970.