Voice of America (Radio program). (1964). The population of the world. [s.n.].
Lua i Stíl Chicago (17ú heag.)Voice of America (Radio program). The Population of the World. [Washington: [s.n.], 1964.
Lua MLA (9ú heag.)Voice of America (Radio program). The Population of the World. [s.n.], 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.