APA (7th ed.) Zitazioa
Malthus, T. R. (2001). An Essay on the principle of population. Electric Book Co..
Chicago Style (17th ed.) Zitazioa
Malthus, T. R. An Essay on the Principle of Population. London: Electric Book Co., 2001.
MLA (9th ed.) Zitazioa
Malthus, T. R. An Essay on the Principle of Population. Electric Book Co., 2001.
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