MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 21. Recto: Terrace of the house at the Cadoxton Lodge Estate, Cadoxton-juxta-Neath, Wales, with a man and woman. Box 1, folder 19. 1858 September. https://collections.library.yale.edu/catalog/15825025.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 19"])(1858 September)[Album Page 21. Recto: Terrace of the house at the Cadoxton Lodge Estate, Cadoxton-juxta-Neath, Wales, with a man and woman]. https://collections.library.yale.edu/catalog/15825025.