Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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