Cita APA (7th ed.)
Malthus, T. (1960). On population: Three essays. The new American library.
Cita Chicago (17th ed.)
Malthus, Thomas. On Population: Three Essays. New York: The new American library, 1960.
Cita MLA (9th ed.)
Malthus, Thomas. On Population: Three Essays. The new American library, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.