APA (7th ed.) Citation

Quentin, P. (1955). Puzzle for fiends: A Peter Duluth mystery. Penguin Books.

Chicago Style (17th ed.) Citation

Quentin, Patrick. Puzzle for Fiends: A Peter Duluth Mystery. Harmondsworth: Penguin Books, 1955.

MLA (9th ed.) Citation

Quentin, Patrick. Puzzle for Fiends: A Peter Duluth Mystery. Penguin Books, 1955.