APA (7e ed.) Bronvermelding

PITCHFORD, J. (1974). Population in economic growth. North-Holland.

Chicago (17e ed.) Bronvermelding

PITCHFORD, J.D. Population in Economic Growth. Amsterdam: North-Holland, 1974.

MLA (9e ed.) Bronvermelding

PITCHFORD, J.D. Population in Economic Growth. North-Holland, 1974.