"Eheu! Fugaces Labuntur Anni"
MLA
Steinberg, Saul, 1914-1999. "Eheu! Fugaces Labuntur Anni". Box 509 (Oversize), folder 7013. circa 1963. https://collections.library.yale.edu/catalog/16855209.
APA, 6th edition
Steinberg, Saul, 1914-1999. (["Box 509 (Oversize), folder 7013"])(circa 1963)["Eheu! Fugaces Labuntur Anni"]. https://collections.library.yale.edu/catalog/16855209.