International Institute for Educational Planning, Ross, K. N., & Mählck, L. (1990). Planning the quality of education: The collection and use of data for informed decision-making. Unesco, International Institute for Educational Planning ; Pergamon.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Institute for Educational Planning, Kenneth N. Ross, και Lars Mählck. Planning the Quality of Education: The Collection and Use of Data for Informed Decision-making. Paris, France : Oxford, England: Unesco, International Institute for Educational Planning ; Pergamon, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)International Institute for Educational Planning, et al. Planning the Quality of Education: The Collection and Use of Data for Informed Decision-making. Unesco, International Institute for Educational Planning ; Pergamon, 1990.