MLA

Migdoll, Herbert, et al. A Chorus Line, Ensemble in Finale (Hats in Air). 0AD. https://collections.library.yale.edu/catalog/2027740.

APA, 6th edition

Migdoll, H., Migdoll, H., & photographer. (0 C.E.). A Chorus Line, ensemble in finale (hats in air) [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2027740.