Cite

"X, Y, Z"

MLA

Steward, Samuel M., 1909-1993. "X, Y, Z". Box 34. circa 1941. https://collections.library.yale.edu/catalog/33466480.

APA, 6th edition

Steward, Samuel M., 1909-1993. (["Box 34"])(circa 1941)["X, Y, Z"]. https://collections.library.yale.edu/catalog/33466480.