Lipton, M. (1977). Why poor people stay poor: Urban bias in world development. Harvard University Press.
Lua i Stíl Chicago (17ú heag.)Lipton, Michael. Why Poor People Stay Poor: Urban Bias in World Development. Cambridge: Harvard University Press, 1977.
Lua MLA (9ú heag.)Lipton, Michael. Why Poor People Stay Poor: Urban Bias in World Development. Harvard University Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.