International Institute for Educational Planning. (1965). Educational planning: An inventory of major research needs. I.I.E.P.
Chicago-Zitierstil (17. Ausg.)International Institute for Educational Planning. Educational Planning: An Inventory of Major Research Needs. Paris: I.I.E.P, 1965.
MLA-Zitierstil (9. Ausg.)International Institute for Educational Planning. Educational Planning: An Inventory of Major Research Needs. I.I.E.P, 1965.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.