Παραπομπή σε μορφή APA (7η εκδ.)

Mason, R. (1971). programmed learning Aid for college mathematies. Learning system company vision of R.D Irwin.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Mason, R. Programmed Learning Aid for College Mathematies. Homewood: Learning system company vision of R.D Irwin, 1971.

Παραπομπή σε μορφή MLA (9th εκδ.)

Mason, R. Programmed Learning Aid for College Mathematies. Learning system company vision of R.D Irwin, 1971.