Hemphill, P. D. (1986). Business communications with writing improvement exercises (3d ed.). Prentice-Hall.
Čikaški stil citiranja (17. izdanje)Hemphill, Phyllis Davis. Business Communications with Writing Improvement Exercises. 3d ed. New Jersey: Prentice-Hall, 1986.
MLA način citiranja (9. izdanje)Hemphill, Phyllis Davis. Business Communications with Writing Improvement Exercises. 3d ed. Prentice-Hall, 1986.
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