APA (7th ed.) Citation

Malthus, T. R. (1976). An essay on the principle of population and a summary view of the principle of population. Penguin Books.

Chicago Style (17th ed.) Citation

Malthus, Thomas Robert. An Essay on the Principle of Population and a Summary View of the Principle of Population. Penguin Books, 1976.

MLA (9th ed.) Citation

Malthus, Thomas Robert. An Essay on the Principle of Population and a Summary View of the Principle of Population. Penguin Books, 1976.

Warning: These citations may not always be 100% accurate.