[A. Adler Festival Services, bass].

MLA

Mandell, Eric, Pa.) Gratz College (Philadelphia and Gratz-Mandell Jewish Music Collection (University of Pennsylvania). [A. Adler Festival Services, bass].

APA

Mandell, E., Gratz College (Philadelphia, P. & Gratz-Mandell Jewish Music Collection (University of Pennsylvania). (1940). [A. Adler Festival Services, bass].

Chicago

Mandell, Eric, Pa.) Gratz College (Philadelphia and Gratz-Mandell Jewish Music Collection (University of Pennsylvania). [A. Adler Festival Services, bass].