APA (7th ed.) Citation

Symons, J. (1950). The 31st of February ([1st American ed.].). Harper.

Chicago Style (17th ed.) Citation

Symons, Julian. The 31st of February. [1st American ed.]. New York: Harper, 1950.

MLA (9th ed.) Citation

Symons, Julian. The 31st of February. [1st American ed.]. Harper, 1950.