APA (7th ed.) Citation

Malthus, T. R. (1960). An essay on the principle of population. J. M. Dent & Sons.

Chicago Style (17th ed.) Citation

Malthus, T. R. An Essay on the Principle of Population. London: J. M. Dent & Sons, 1960.

MLA (9th ed.) Citation

Malthus, T. R. An Essay on the Principle of Population. J. M. Dent & Sons, 1960.