Dyfyniad APA

Ober, S. (2003). Contemporary business communication (5th ed.). Houghton Mifflin Co..

Dyfyniad Arddull Chicago

Ober, Scot. Contemporary Business Communication. 5th ed. Boston: Houghton Mifflin Co., 2003.

Dyfyniad MLA

Ober, Scot. Contemporary Business Communication. 5th ed. Houghton Mifflin Co., 2003.

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