Παραπομπή σε μορφή APA (7η εκδ.)

Malthus, T. R., & James, P. (1987). An essay on the principle of population; or a view of its past and present effects on human happiness. Cambridge University press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Malthus, T. R., και Patricia James. An Essay on the Principle of Population; or a View of Its Past and Present Effects on Human Happiness. Cambridge: Cambridge University press, 1987.

Παραπομπή σε μορφή MLA (8th εκδ.)

Malthus, T. R., και Patricia James. An Essay on the Principle of Population; or a View of Its Past and Present Effects on Human Happiness. Cambridge University press, 1987.