MLA

Koba, 1848-1880. Drawing in graphite with red and blue colored pencil showing the heads of two American Indian women. volume 1, page 113. circa 1878-1880. https://collections.library.yale.edu/catalog/33234040.

APA, 6th edition

Koba, 1848-1880. (["volume 1, page 113"])(circa 1878-1880)[Drawing in graphite with red and blue colored pencil showing the heads of two American Indian women]. https://collections.library.yale.edu/catalog/33234040.