Cite

Boy Scouts tent pitching contest, small photo

MLA

Boy Scouts Tent Pitching Contest, Small Photo. 0AD. https://collections.library.yale.edu/catalog/12374957.

APA, 6th edition

Boy Scouts tent pitching contest, small photo. (0 C.E.). [Photographs (AAT)]. https://collections.library.yale.edu/catalog/12374957.