APA-Zitierstil (7. Ausg.)

Psacharopoulos, G. (1993). Returns to investment in education: A global update (Rev.). Office of the Director, Latin America and the Caribbean Region, World Bank.

Chicago-Zitierstil (17. Ausg.)

Psacharopoulos, George. Returns to Investment in Education: A Global Update. Rev. Washington, DC: Office of the Director, Latin America and the Caribbean Region, World Bank, 1993.

MLA-Zitierstil (9. Ausg.)

Psacharopoulos, George. Returns to Investment in Education: A Global Update. Rev. Office of the Director, Latin America and the Caribbean Region, World Bank, 1993.