Não informado. (1928). American school and university. Educational Division of North American.
Chicago-Zitierstil (17. Ausg.)Não informado. American School and University. Philadelphia, Pa: Educational Division of North American, 1928.
MLA-Zitierstil (8. Ausg.)Não informado. American School and University. Educational Division of North American, 1928.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.