APA (7th ed.) Citation

Roberts, W. F. (2002). Bonus time: One pilot's story of World War II. Xlibris.

Chicago Style (17th ed.) Citation

Roberts, William F. Bonus Time: One Pilot's Story of World War II. [Philadelphia, Pa.]: Xlibris, 2002.

MLA (9th ed.) Citation

Roberts, William F. Bonus Time: One Pilot's Story of World War II. Xlibris, 2002.