APA aipamena

Psacharopoulos, G. (1987). Economics of Education. ELSEVIER.

Chicago Style aipamena

Psacharopoulos, George. Economics of Education. ELSEVIER, 1987.

MLA aipamena

Psacharopoulos, George. Economics of Education. ELSEVIER, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.