MLA

DeHuff, Elizabeth Willis, 1886-1983. Atencio, Gilbert Benjamin (Wah Peen). Left: [Walking man, sketch for drawing on right]. #33 Right: [Pueblo Man and Woman with basket on her head watching]. #32. Box 1, folder 2. [circa 1941]. https://collections.library.yale.edu/catalog/2039343.

APA, 6th edition

DeHuff, Elizabeth Willis, 1886-1983. (["Box 1, folder 2"])([circa 1941])[Atencio, Gilbert Benjamin (Wah Peen). Left: [Walking man, sketch for drawing on right]. #33 Right: [Pueblo Man and Woman with basket on her head watching]. #32]. https://collections.library.yale.edu/catalog/2039343.