MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 27. Recto: Bridge over the Tennant Canal and Neath River, Wales. Box 1, folder 25. 1858. https://collections.library.yale.edu/catalog/15483228.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 25"])(1858)[Album Page 27. Recto: Bridge over the Tennant Canal and Neath River, Wales]. https://collections.library.yale.edu/catalog/15483228.