Ensor, G. (1994). An inquiry concerning the population of nations: Containing a refutation of Mr Malthus's Essay on population (Reprint of the 1818 ed.). Routledge u.a.
Chicago-Zitierstil (17. Ausg.)Ensor, George. An Inquiry Concerning the Population of Nations: Containing a Refutation of Mr Malthus's Essay on Population. Reprint of the 1818 ed. London: Routledge u.a, 1994.
MLA-Zitierstil (9. Ausg.)Ensor, George. An Inquiry Concerning the Population of Nations: Containing a Refutation of Mr Malthus's Essay on Population. Reprint of the 1818 ed. Routledge u.a, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.