APA (7th ed.) Citation

De Céspedes, A. (1957). The secret. Simon and Schuster.

Chicago Style (17th ed.) Citation

De Céspedes, Alba. The Secret. New York: Simon and Schuster, 1957.

MLA (9th ed.) Citation

De Céspedes, Alba. The Secret. Simon and Schuster, 1957.

Warning: These citations may not always be 100% accurate.