BABBIE, E. (1984). Apple Logo For Teachers Earl Babbie. Wardsworth Publishing.
Lua i Stíl Chicago (17ú heag.)BABBIE, Earl. Apple Logo For Teachers Earl Babbie. Wardsworth Publishing, 1984.
Lua MLA (8ú heag.)BABBIE, Earl. Apple Logo For Teachers Earl Babbie. Wardsworth Publishing, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.