APA (7th ed.) Citation

Proctor, R. L. (1983). Hitler's Luftwaffe in the Spanish Civil War (1. publ.). Greenwood Pr.

Chicago Style (17th ed.) Citation

Proctor, Raymond L. Hitler's Luftwaffe in the Spanish Civil War. 1. publ. Westport, Conn. u.a: Greenwood Pr, 1983.

MLA (9th ed.) Citation

Proctor, Raymond L. Hitler's Luftwaffe in the Spanish Civil War. 1. publ. Greenwood Pr, 1983.