Παραπομπή σε μορφή APA (7η εκδ.)

Malthus, T. R., & Appleman, P. (1976). An essay on the principle of population: Text sources and background criticism. Norton.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Malthus, T. R., και Philip Appleman. An Essay on the Principle of Population: Text Sources and Background Criticism. New York: Norton, 1976.

Παραπομπή σε μορφή MLA (9th εκδ.)

Malthus, T. R., και Philip Appleman. An Essay on the Principle of Population: Text Sources and Background Criticism. Norton, 1976.