APA (7th ed.) Citation

Longyard, W. H. (1994). Who's who in aviation history: 500 biographies. Airlife.

Chicago Style (17th ed.) Citation

Longyard, William H. Who's Who in Aviation History: 500 Biographies. Shrewsbury: Airlife, 1994.

MLA (9th ed.) Citation

Longyard, William H. Who's Who in Aviation History: 500 Biographies. Airlife, 1994.

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