Cita APA (7th ed.)
Dekker, E. I., & Van Schalkwyk, O. J. (1989). Modern education systems. Butterworths.
Cita Chicago (17th ed.)
Dekker, E. I., i O. J. Van Schalkwyk. Modern Education Systems. Durban: Butterworths, 1989.
Cita MLA (9th ed.)
Dekker, E. I., i O. J. Van Schalkwyk. Modern Education Systems. Butterworths, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.