Cite

Excursion to the Great Wall at Nankow Pass

MLA

Excursion to the Great Wall at Nankow Pass. 1927. https://collections.library.yale.edu/catalog/17245087.

APA, 6th edition

Excursion to the Great Wall at Nankow Pass. (1927). [Photographs (AAT)]. https://collections.library.yale.edu/catalog/17245087.