APA (7th ed.) Citation

Keenan, J. (1988). Blue heaven. Penguin Books.

Chicago Style (17th ed.) Citation

Keenan, Joe. Blue Heaven. New York: Penguin Books, 1988.

MLA (9th ed.) Citation

Keenan, Joe. Blue Heaven. Penguin Books, 1988.

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