APA (7th ed.) Citation

Perry, R. B. (1946). One world in the making (2. ed.). Current Books.

Chicago Style (17th ed.) Citation

Perry, Ralph Barton. One World in the Making. 2. ed. New York: Current Books, 1946.

MLA (9th ed.) Citation

Perry, Ralph Barton. One World in the Making. 2. ed. Current Books, 1946.