MLA

Koba, 1848-1880. Sketch in graphite of a standing Kiowa Indian man wearing an eagle-feather headdress with buffalo horns. volume 1, page 135. circa 1878-1880. https://collections.library.yale.edu/catalog/33234049.

APA, 6th edition

Koba, 1848-1880. (["volume 1, page 135"])(circa 1878-1880)[Sketch in graphite of a standing Kiowa Indian man wearing an eagle-feather headdress with buffalo horns]. https://collections.library.yale.edu/catalog/33234049.