Não informado. (1894). Contributions to philosophy, psychology and education. Columbia University.
Chicago (17e ed.) BronvermeldingNão informado. Contributions to Philosophy, Psychology and Education. New York: Columbia University, 1894.
MLA (8e ed.) BronvermeldingNão informado. Contributions to Philosophy, Psychology and Education. Columbia University, 1894.
Let op: Deze citaties zijn niet altijd 100% accuraat.