APA (7th ed.) Citation

Gunther, M. (1985). D. B. Cooper: What really happened. Contemporary Books.

Chicago Style (17th ed.) Citation

Gunther, Max. D. B. Cooper: What Really Happened. Chicago: Contemporary Books, 1985.

MLA (8th ed.) Citation

Gunther, Max. D. B. Cooper: What Really Happened. Contemporary Books, 1985.

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