Cite

Scenes from siege of Nanking (glass negatives) - Imperial soldiers at foot of Peh Chi Ko

MLA

Scenes from Siege of Nanking (Glass Negatives) - Imperial Soldiers at Foot of Peh Chi Ko. 0AD. https://collections.library.yale.edu/catalog/12377436.

APA, 6th edition

Scenes from siege of Nanking (glass negatives) - Imperial soldiers at foot of Peh Chi Ko. (0 C.E.). [Photographs (AAT)]. https://collections.library.yale.edu/catalog/12377436.