Psacharopoulos, G. (1991). The economic impact of education: Lessons for policy makers. ICB Press.
Chicago-referens (17:e uppl.)Psacharopoulos, George. The Economic Impact of Education: Lessons for Policy Makers. San Francisco: ICB Press, 1991.
MLA-referens (8:e uppl.)Psacharopoulos, George. The Economic Impact of Education: Lessons for Policy Makers. ICB Press, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.