Johnsson, H. (1990). Professional communications--for a change. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Johnsson, Hans. Professional Communications--for a Change. New York: Prentice Hall, 1990.
Lua MLA (9ú heag.)Johnsson, Hans. Professional Communications--for a Change. Prentice Hall, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.