MLA

Missionary Ridge from De Long Point, No. 53873. Detroit Photographic Co. or Detroit Publishing Co, 0AD. https://collections.library.yale.edu/catalog/2006993.

APA, 6th edition

Missionary Ridge from De Long Point, no. 53873. (0 C.E.). [Photograph albums, Photographic prints, Photographs]. Detroit Photographic Co. or Detroit Publishing Co. https://collections.library.yale.edu/catalog/2006993.