Cita APA (7th ed.)
Pitchford, J. D. (1974). The economics of population: An introduction. Australian National University Press.
Cita Chicago (17th ed.)
Pitchford, J. D. The Economics of Population: An Introduction. Canberra: Australian National University Press, 1974.
Cita MLA (9th ed.)
Pitchford, J. D. The Economics of Population: An Introduction. Australian National University Press, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.