Cita APA

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

Citación estilo Chicago

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

Cita MLA

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