Ferrell, O. C., & Hirt, G. A. (1996). Business: A changing world (2nd ed.). Irwin.
Lua i Stíl Chicago (17ú heag.)Ferrell, O. C., agus Geoffrey A. Hirt. Business: A Changing World. 2nd ed. Chicago: Irwin, 1996.
Lua MLA (8ú heag.)Ferrell, O. C., agus Geoffrey A. Hirt. Business: A Changing World. 2nd ed. Irwin, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.