Cite

History of the 477th Bomb Group Medium.

MLA

Robinson, Melvin Charles, and compiler. History of the 477th Bomb Group Medium. 1943. https://collections.library.yale.edu/catalog/17476333.

APA, 6th edition

Robinson, M. C., & compiler. (1943). History of the 477th Bomb Group Medium. [Aerial photographs., Gelatin silver prints., Photograph albums., Photographs., Programs (documents)]. https://collections.library.yale.edu/catalog/17476333.