APA Zitierstil

Open University Course Team. (1976). Approximation I and II.Units 9 and 10 (4th ed.). Open uty press.

Chicago Zitierstil

Open University Course Team. Approximation I and II.Units 9 and 10. 4th ed. Open uty press, 1976.

MLA Zitierstil

Open University Course Team. Approximation I and II.Units 9 and 10. 4th ed. Open uty press, 1976.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.