LEFRANCOIS, G. R. (1984). The lifespan. Wadsworth Publishing.
Lua i Stíl Chicago (17ú heag.)LEFRANCOIS, Guy R. The Lifespan. Belmont: Wadsworth Publishing, 1984.
Lua MLA (9ú heag.)LEFRANCOIS, Guy R. The Lifespan. Wadsworth Publishing, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.