APA (7th ed.) Citation

McWilliams. J. A. (1942). Cosmology: A text for colleges (2nd rev. ed.). MacMillan.

Chicago Style (17th ed.) Citation

McWilliams. J. A. Cosmology: A Text for Colleges. 2nd rev. ed. New York: MacMillan, 1942.

MLA (9th ed.) Citation

McWilliams. J. A. Cosmology: A Text for Colleges. 2nd rev. ed. MacMillan, 1942.