(1981). Educational Statistics in OECD Countries. Organisation for Economic Co Operation and Development.
Chicago-referens (17:e uppl.)Educational Statistics in OECD Countries. Organisation for Economic Co Operation and Development, 1981.
MLA-referens (8:e uppl.)Educational Statistics in OECD Countries. Organisation for Economic Co Operation and Development, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.