(1979). A Manual for the analysis of costs and outcomes in nonformal education. International Office, Educational Testing Service.
Chicago-Zitierstil (17. Ausg.)A Manual for the Analysis of Costs and Outcomes in Nonformal Education. Princeton, N.J: International Office, Educational Testing Service, 1979.
MLA-Zitierstil (9. Ausg.)A Manual for the Analysis of Costs and Outcomes in Nonformal Education. International Office, Educational Testing Service, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.