Παραπομπή σε μορφή APA (7η εκδ.)

Orton, A. (1992). Learning mathematics: Issues, theory and classroom practice (2nd ed.). Cassell.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Orton, Anthony. Learning Mathematics: Issues, Theory and Classroom Practice. 2nd ed. London: Cassell, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Orton, Anthony. Learning Mathematics: Issues, Theory and Classroom Practice. 2nd ed. Cassell, 1992.