APA (7th ed.) Citation

Guffey, M. E., & Wickham, R. (1989). Business English (3rd ed.). PWS-KENT Publ..

Chicago Style (17th ed.) Citation

Guffey, Mary Ellen, and R. Wickham. Business English. 3rd ed. Boston: PWS-KENT Publ., 1989.

MLA (9th ed.) Citation

Guffey, Mary Ellen, and R. Wickham. Business English. 3rd ed. PWS-KENT Publ., 1989.

Warning: These citations may not always be 100% accurate.