Godwin, W. (1964). Of population: An enquiry concerning the power of increase in the numbers of mankind, being an answer to Mr. Malthus's essay on that subject (1820). Kelley.
Lua i Stíl Chicago (17ú heag.)Godwin, William. Of Population: An Enquiry Concerning the Power of Increase in the Numbers of Mankind, Being an Answer to Mr. Malthus's Essay on That Subject (1820). New York: Kelley, 1964.
Lua MLA (9ú heag.)Godwin, William. Of Population: An Enquiry Concerning the Power of Increase in the Numbers of Mankind, Being an Answer to Mr. Malthus's Essay on That Subject (1820). Kelley, 1964.
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