APA (7th ed.) Citation

Gamow, G. (1941). Biography of the earth: Its past, present and future. The Viking Press.

Chicago Style (17th ed.) Citation

Gamow, George. Biography of the Earth: Its Past, Present and Future. New York: The Viking Press, 1941.

MLA (9th ed.) Citation

Gamow, George. Biography of the Earth: Its Past, Present and Future. The Viking Press, 1941.