Malthus, T. R. (1951). Principles of political economy considered with a view to their practical application (2nd ed.). A.M. Kelley.
芝加哥风格引文Malthus, Thomas Robert. Principles of Political Economy Considered with a View to Their Practical Application. 2nd ed. New York: A.M. Kelley, 1951.
MLA引文Malthus, Thomas Robert. Principles of Political Economy Considered with a View to Their Practical Application. 2nd ed. A.M. Kelley, 1951.
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