MLA

Students and T.C. Chao of School of Religion, Yenching University on Retreat in Western Hills near Beijing, China, 1931. 1931. https://collections.library.yale.edu/catalog/11427083.

APA, 6th edition

Students and T.C. Chao of School of Religion, Yenching University on retreat in Western Hills near Beijing, China, 1931. (1931). [Group portraits (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11427083.