Cite

Scenes from siege of Nanking (glass negatives) - Some of prisoners beheaded at open of trouble

MLA

Scenes from Siege of Nanking (Glass Negatives) - Some of Prisoners Beheaded at Open of Trouble. 0AD. https://collections.library.yale.edu/catalog/12377424.

APA, 6th edition

Scenes from siege of Nanking (glass negatives) - Some of prisoners beheaded at open of trouble. (0 C.E.). [Photographs (AAT)]. https://collections.library.yale.edu/catalog/12377424.