APA (7th ed.) Citation

Mantley, J. (1956). The 27th day ([Book Club ed.].). E. P. Dutton.

Chicago Style (17th ed.) Citation

Mantley, John. The 27th Day. [Book Club ed.]. New York: E. P. Dutton, 1956.

MLA (9th ed.) Citation

Mantley, John. The 27th Day. [Book Club ed.]. E. P. Dutton, 1956.