Cite

Yale Glee Club in San Carlos, 06/01/unknown year--flier

MLA

Yale Glee Club in San Carlos, 06/01/Unknown Year--Flier. 6AD. https://collections.library.yale.edu/catalog/10538435.

APA, 6th edition

Yale Glee Club in San Carlos, 06/01/unknown year--flier. (6 C.E.). [Paper]. https://collections.library.yale.edu/catalog/10538435.