MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 16. Recto: Aberdulais Iron Works near Aberdulais Falls, Wales. Box 1, folder 14. circa 1858. https://collections.library.yale.edu/catalog/15475234.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 14"])(circa 1858)[Album Page 16. Recto: Aberdulais Iron Works near Aberdulais Falls, Wales]. https://collections.library.yale.edu/catalog/15475234.