Malthus, T. R. (1968). Principles of political economy: Considered with a view to their practical application. Kelley.
Chicago-Zitierstil (17. Ausg.)Malthus, Thomas Robert. Principles of Political Economy: Considered with a View to Their Practical Application. New York: Kelley, 1968.
MLA-Zitierstil (9. Ausg.)Malthus, Thomas Robert. Principles of Political Economy: Considered with a View to Their Practical Application. Kelley, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.