APA (7th ed.) Citation

Le Carre, J. (1990). The secret pilgrim. Ballantine Books.

Chicago Style (17th ed.) Citation

Le Carre, John. The Secret Pilgrim. New York: Ballantine Books, 1990.

MLA (9th ed.) Citation

Le Carre, John. The Secret Pilgrim. Ballantine Books, 1990.

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