MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 40. Recto, top: Group of enlisted men in the 1st West India Regiment in camp, with Fort Charlotte in the background, in Nassau, New Providence. Box 1, folder 38. circa 1860. https://collections.library.yale.edu/catalog/15817468.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 38"])(circa 1860)[Album Page 40. Recto, top: Group of enlisted men in the 1st West India Regiment in camp, with Fort Charlotte in the background, in Nassau, New Providence]. https://collections.library.yale.edu/catalog/15817468.