Curtis, D. B., Floyd, J. J., & Winsor, J. L. (1992). Business and professional communication. HarperCollins Publishers.
Citazione stile Chigago Style (17a edizione)Curtis, Dan B., James J. Floyd, e Jerry L. Winsor. Business and Professional Communication. New York: HarperCollins Publishers, 1992.
Citatione MLA (9a ed.)Curtis, Dan B., et al. Business and Professional Communication. HarperCollins Publishers, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.