APA (7th ed.) Citation

Calder, R. (1961). After the seventh day: The world man created. Simon and Schuster.

Chicago Style (17th ed.) Citation

Calder, Ritchie. After the Seventh Day: The World Man Created. New York: Simon and Schuster, 1961.

MLA (9th ed.) Citation

Calder, Ritchie. After the Seventh Day: The World Man Created. Simon and Schuster, 1961.