MLA

Thomson, James Claude, 1889-. China Slides: slide carousel #5, slides of Nanjing (Nanking), Guling (Kuling), Guangzhou (Canton), Hong Kong and Macao; slide carousel #6, slides of Yunnan and Xikang (Sikang), including leprosy colony, market scenes, Lolo country, Nosu people. 6, folder 156. 1948-1949. https://collections.library.yale.edu/catalog/33375272.

APA, 6th edition

Thomson, James Claude, 1889-. (["6, folder 156"])(1948-1949)[China Slides: slide carousel #5, slides of Nanjing (Nanking), Guling (Kuling), Guangzhou (Canton), Hong Kong and Macao; slide carousel #6, slides of Yunnan and Xikang (Sikang), including leprosy colony, market scenes, Lolo country, Nosu people]. https://collections.library.yale.edu/catalog/33375272.