APA (7e ed.) Bronvermelding

Psacharopoulos, G. (1975). Earnnings and educatinal in OECD countries. OECD.

Chicago (17e ed.) Bronvermelding

Psacharopoulos, George. Earnnings and Educatinal in OECD Countries. OECD, 1975.

MLA (8e ed.) Bronvermelding

Psacharopoulos, George. Earnnings and Educatinal in OECD Countries. OECD, 1975.

Let op: Deze citaties zijn niet altijd 100% accuraat.