Simon, J. L. (1992). Population and development in poor countries: Selected essays. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Simon, Julian Lincoln. Population and Development in Poor Countries: Selected Essays. Princeton, N.J: Princeton University Press, 1992.
Lua MLA (9ú heag.)Simon, Julian Lincoln. Population and Development in Poor Countries: Selected Essays. Princeton University Press, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.