Hardin, G. (1993). Living Within Limits: Ecology, Economics, And Population Taboos. Oxford University.
Lua i Stíl Chicago (17ú heag.)Hardin, Garrett. Living Within Limits: Ecology, Economics, And Population Taboos. Oxford University, 1993.
Lua MLA (8ú heag.)Hardin, Garrett. Living Within Limits: Ecology, Economics, And Population Taboos. Oxford University, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.