MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 33. Recto: Ruins of Neath Abbey with the Tennant Canal in the foreground in Neath, Wales. Box 1, folder 31. 1858. https://collections.library.yale.edu/catalog/15940907.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 31"])(1858)[Album Page 33. Recto: Ruins of Neath Abbey with the Tennant Canal in the foreground in Neath, Wales]. https://collections.library.yale.edu/catalog/15940907.