APA (7th ed.) Citation

Malthus, T. R. (1971). An essay on the principle of population: Or, A view of its past and present effects on human happiness (7th ed.). A. M. Kelley.

Chicago Style (17th ed.) Citation

Malthus, T. R. An Essay on the Principle of Population: Or, A View of Its Past and Present Effects on Human Happiness. 7th ed. New York: A. M. Kelley, 1971.

MLA (9th ed.) Citation

Malthus, T. R. An Essay on the Principle of Population: Or, A View of Its Past and Present Effects on Human Happiness. 7th ed. A. M. Kelley, 1971.