Weihrich, H., & Koontz, H. (1993). Management: A global perspective (Tenth edition.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Weihrich, Heinz, agus Harold Koontz. Management: A Global Perspective. Tenth edition. New York: McGraw-Hill, 1993.
Lua MLA (8ú heag.)Weihrich, Heinz, agus Harold Koontz. Management: A Global Perspective. Tenth edition. McGraw-Hill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.