Dyfyniad APA

Herta A murphy. (1997). Effective business communications/7e (7th ed.). Mc Graw Hill.

Dyfyniad Arddull Chicago

Herta A murphy. Effective Business Communications/7e. 7th ed. New york: Mc Graw Hill, 1997.

Dyfyniad MLA

Herta A murphy. Effective Business Communications/7e. 7th ed. Mc Graw Hill, 1997.

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