APA (7e ed.) Bronvermelding

Orem, R. (1974). Montessori: Her method and the movement. G.P.Putnam's sons.

Chicago (17e ed.) Bronvermelding

Orem, R.C. Montessori: Her Method and the Movement. New York: G.P.Putnam's sons, 1974.

MLA (9e ed.) Bronvermelding

Orem, R.C. Montessori: Her Method and the Movement. G.P.Putnam's sons, 1974.