MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 51. Recto: Group of enlisted men and officers in the 1st West India Regiment with field artillery in Nassau, New Providence. Box 1, folder 49. circa 1860. https://collections.library.yale.edu/catalog/16657598.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 49"])(circa 1860)[Album Page 51. Recto: Group of enlisted men and officers in the 1st West India Regiment with field artillery in Nassau, New Providence]. https://collections.library.yale.edu/catalog/16657598.