APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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