MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 50. Recto: Parliament Square from Prince George Wharf in Nassau, New Providence. Box 1, folder 48. circa 1860. https://collections.library.yale.edu/catalog/16657597.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 48"])(circa 1860)[Album Page 50. Recto: Parliament Square from Prince George Wharf in Nassau, New Providence]. https://collections.library.yale.edu/catalog/16657597.