APA (7th ed.) Citation

Bainbridge, B. The birthday boys (First edition.). Penguin Books.

Chicago Style (17th ed.) Citation

Bainbridge, Beryl. The Birthday Boys. First edition. New York: Penguin Books.

MLA (9th ed.) Citation

Bainbridge, Beryl. The Birthday Boys. First edition. Penguin Books.

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