APA (7th ed.) Citation

Thomas, A. (1986). Goodbye Harold, good luck / Audrey Thomas. Penguin.

Chicago Style (17th ed.) Citation

Thomas, Audrey. Goodbye Harold, Good Luck / Audrey Thomas. Harmondsworth: Penguin, 1986.

MLA (9th ed.) Citation

Thomas, Audrey. Goodbye Harold, Good Luck / Audrey Thomas. Penguin, 1986.

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