Booher, D. (1994). Communicate with confidence! McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Booher, Dianna. Communicate with Confidence! McGraw-Hill, 1994.
Lua MLA (8ú heag.)Booher, Dianna. Communicate with Confidence! McGraw-Hill, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.