Skinner, S. J., & Ivancevich, J. M. (1992). Business for the 21st century. R.D. Irwin.
Lua i Stíl Chicago (17ú heag.)Skinner, Steven J., agus John M. Ivancevich. Business for the 21st Century. Homewood, IL: R.D. Irwin, 1992.
Lua MLA (8ú heag.)Skinner, Steven J., agus John M. Ivancevich. Business for the 21st Century. R.D. Irwin, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.