एपीए उद्धरण

Malthus, T., & Pullen, J. (1989). Principles of Political Economy. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Malthus, T.R, और John Pullen. Principles of Political Economy. Cambridge: Cambridge University Press, 1989.

एमएलए उद्धरण

Malthus, T.R, और John Pullen. Principles of Political Economy. Cambridge University Press, 1989.