APA (7th ed.) Citation

De Cespedes, A. (1957). The secret. Harvill.

Chicago Style (17th ed.) Citation

De Cespedes, Alba. The Secret. London: Harvill, 1957.

MLA (8th ed.) Citation

De Cespedes, Alba. The Secret. Harvill, 1957.

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