Butler, N. M. (1934). Between two worlds: Interpretations of the age in which we live; essays and addresses. C. Scribner's Sons.

Butler, Nicholas Murray. Between Two Worlds: Interpretations of the Age in Which We Live; Essays and Addresses. New York, London: C. Scribner's Sons, 1934.

Butler, Nicholas Murray. Between Two Worlds: Interpretations of the Age in Which We Live; Essays and Addresses. C. Scribner's Sons, 1934.