Cite

Two female ski instructors(?), Jack Alexander, and Michael Bennett (l to r)

MLA

Alexander, Jack. Two Female Ski Instructors(?), Jack Alexander, and Michael Bennett (l to r). 0AD. https://collections.library.yale.edu/catalog/2027711.

APA, 6th edition

Alexander, J. (0 C.E.). Two female ski instructors(?), Jack Alexander, and Michael Bennett (l to r) [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2027711.