Kreager, P. (1977). Malthus and formal analysis: A cautionary tale. Anthropological Society of Oxford.
Lua i Stíl Chicago (17ú heag.)Kreager, P. Malthus and Formal Analysis: A Cautionary Tale. Anthropological Society of Oxford, 1977.
Lua MLA (9ú heag.)Kreager, P. Malthus and Formal Analysis: A Cautionary Tale. Anthropological Society of Oxford, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.