Não informado. (1927). Proceedings and addresses of the American Philosophical Association. American Philosophical Association.
Chicago (17e ed.) BronvermeldingNão informado. Proceedings and Addresses of the American Philosophical Association. Newark, Del: American Philosophical Association, 1927.
MLA (8e ed.) BronvermeldingNão informado. Proceedings and Addresses of the American Philosophical Association. American Philosophical Association, 1927.
Let op: Deze citaties zijn niet altijd 100% accuraat.