APA Citatie

Malthus, T. R. (1970). An essay on the principle of population and a summary view of the principle of population. Penguin books.

Chicago Style citaat

Malthus, Thomas Robert. An Essay on the Principle of Population and a Summary View of the Principle of Population. England: Penguin books, 1970.

MLA citatie

Malthus, Thomas Robert. An Essay on the Principle of Population and a Summary View of the Principle of Population. Penguin books, 1970.