Cita APA (7th ed.)

Morgan, M. (1969). Population and food supply. Collins.

Cita Chicago (17th ed.)

Morgan, Michael. Population and Food Supply. London: Collins, 1969.

Cita MLA (9th ed.)

Morgan, Michael. Population and Food Supply. Collins, 1969.

Atenció: Aquestes cites poden no estar 100% correctes.