Walton, D. (1989). Are you communicating: You can't manage without it [sound recording]. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Walton, Donald. Are You Communicating: You Can't Manage Without It [sound Recording]. New York: McGraw-Hill, 1989.
Lua MLA (9ú heag.)Walton, Donald. Are You Communicating: You Can't Manage Without It [sound Recording]. McGraw-Hill, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.