MLA

Brown, Harry D. Main Parade Ground, Fort Bliss, Texas. 1914. https://collections.library.yale.edu/catalog/2017138.

APA, 6th edition

Brown, H. D. (1914). Main parade ground, Fort Bliss, Texas [Photographic postcards, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017138.