Guffey, M. E. (1991). Essentials of business communication (2nd ed.). PWS - KENT.
Chicago Style (17th ed.) CitationGuffey, Mary E. Essentials of Business Communication. 2nd ed. Boston: PWS - KENT, 1991.
MLA引文Guffey, Mary E. Essentials of Business Communication. 2nd ed. PWS - KENT, 1991.
警告:這些引文格式不一定是100%准確.