Cita APA (7a ed.)

Johnsson, H. (1990). Professional communications--for a change. Prentice Hall.

Cita Chicago Style (17a ed.)

Johnsson, Hans. Professional Communications--for a Change. New York: Prentice Hall, 1990.

Cita MLA (9a ed.)

Johnsson, Hans. Professional Communications--for a Change. Prentice Hall, 1990.