Cita APA (7th ed.)

Cronin, A. J. (1956). The keys of the kingdom. Bantam Books.

Cita Chicago (17th ed.)

Cronin, Archibald Joseph. The Keys of the Kingdom. Nueva York: Bantam Books, 1956.

Cita MLA (9th ed.)

Cronin, Archibald Joseph. The Keys of the Kingdom. Bantam Books, 1956.