APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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