Barnabas, B. (1984). Develop your power to deal with people. Parker Publishing.
Lua i Stíl Chicago (17ú heag.)Barnabas, Bentley. Develop Your Power to Deal with People. India: Parker Publishing, 1984.
Lua MLA (8ú heag.)Barnabas, Bentley. Develop Your Power to Deal with People. Parker Publishing, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.