MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 74. Recto: Marine Square and Almond Walk in Port of Spain, Trinidad; image shows buildings, promenade, and fountain. Box 1, folder 72. circa 1860. https://collections.library.yale.edu/catalog/16657615.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 72"])(circa 1860)[Album Page 74. Recto: Marine Square and Almond Walk in Port of Spain, Trinidad; image shows buildings, promenade, and fountain]. https://collections.library.yale.edu/catalog/16657615.