APA aipamena

Malthus, T. R. (1966). First essays on population. MacMillion.

Chicago Style aipamena

Malthus, Thomas Robert. First Essays on Population. New York: MacMillion, 1966.

MLA aipamena

Malthus, Thomas Robert. First Essays on Population. MacMillion, 1966.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.