APA (7th ed.) Citation

Updike, J. (2001). Gertrude and Claudius (1st. Ballantine Books trade ed.). Ballantine Books.

Chicago Style (17th ed.) Citation

Updike, John. Gertrude and Claudius. 1st. Ballantine Books trade ed. New York: Ballantine Books, 2001.

MLA (9th ed.) Citation

Updike, John. Gertrude and Claudius. 1st. Ballantine Books trade ed. Ballantine Books, 2001.

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