Lua APA (7ú heag.)

Guffey, M. E. (1991). Essentials of business communication (2nd ed.). PWS - KENT.

Lua i Stíl Chicago (17ú heag.)

Guffey, Mary E. Essentials of Business Communication. 2nd ed. Boston: PWS - KENT, 1991.

Lua MLA (9ú heag.)

Guffey, Mary E. Essentials of Business Communication. 2nd ed. PWS - KENT, 1991.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.