Citazione Stile APA (7a Edizione)

Hemphill, P. D., & Hemphill, A. M. (1981). Business communications with writing improvement exercises (2nd ed.). Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

Hemphill, Phyllis D., e Anita M. Hemphill. Business Communications with Writing Improvement Exercises. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1981.

Citatione MLA (9a ed.)

Hemphill, Phyllis D., e Anita M. Hemphill. Business Communications with Writing Improvement Exercises. 2nd ed. Prentice-Hall, 1981.