Dyfyniad APA

Malthus, T. (1960). On population: Three essays. The new American library.

Dyfyniad Arddull Chicago

Malthus, Thomas. On Population: Three Essays. New York: The new American library, 1960.

Dyfyniad MLA

Malthus, Thomas. On Population: Three Essays. The new American library, 1960.

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