MLA

Williams, S. Wells (Samuel Wells), 1812-1884. "Lists of plants in the treatise on grains and planting," in Chinese and English. Box 13, folder 53. Undated. https://collections.library.yale.edu/catalog/10016413.

APA, 6th edition

Williams, S. Wells (Samuel Wells), 1812-1884. (["Box 13, folder 53"])(Undated)["Lists of plants in the treatise on grains and planting," in Chinese and English]. https://collections.library.yale.edu/catalog/10016413.