Hawthorn, G. (1978). Population and development. F. Cass.
Lua i Stíl Chicago (17ú heag.)Hawthorn, Geoffrey. Population and Development. London ; Totowa, N.J.: F. Cass, 1978.
Lua MLA (8ú heag.)Hawthorn, Geoffrey. Population and Development. F. Cass, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.