APA (7th ed.) Citation

Petersen, E. B. (1944). History of the 42d Bombardment Squadron (H), 11th Bombardment Group (H), Seventh Air Force. [publisher not identified].

Chicago Style (17th ed.) Citation

Petersen, Edward B. History of the 42d Bombardment Squadron (H), 11th Bombardment Group (H), Seventh Air Force. [U.S.]: [publisher not identified], 1944.

MLA (9th ed.) Citation

Petersen, Edward B. History of the 42d Bombardment Squadron (H), 11th Bombardment Group (H), Seventh Air Force. [publisher not identified], 1944.