MLA

Chi-Wek-Kiethe and Sister. William Soule, 0AD. https://collections.library.yale.edu/catalog/2010359.

APA, 6th edition

Chi-wek-kiethe and sister. (0 C.E.). [Photographic prints, Photographs, Studio portraits]. William Soule. https://collections.library.yale.edu/catalog/2010359.