Dyfyniad APA

Malthus,Thomas, & Gilbert,Geoffrey. (2008). Essay on the principle of population. Oxford University Press.

Dyfyniad Arddull Chicago

Malthus,Thomas, and Gilbert,Geoffrey. Essay on the Principle of Population. New Delhi: Oxford University Press, 2008.

Dyfyniad MLA

Malthus,Thomas, and Gilbert,Geoffrey. Essay on the Principle of Population. Oxford University Press, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.