Cite

"Bumper stickers, buttons, NYC Lectures"

MLA

Erdoes, Richard, 1912-2008. "Bumper stickers, buttons, NYC Lectures". Box 56. 1970-1975, undated. https://collections.library.yale.edu/catalog/2084487.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 56"])(1970-1975, undated)["Bumper stickers, buttons, NYC Lectures"]. https://collections.library.yale.edu/catalog/2084487.