Lua APA (7ú heag.)

KOONTZ, H., & WEIHRICH, H. (1988). Management.-- Ed.9. McGraw-Hill Book.

Lua i Stíl Chicago (17ú heag.)

KOONTZ, Harold, agus Heinz WEIHRICH. Management.-- Ed.9. New York: McGraw-Hill Book, 1988.

Lua MLA (9ú heag.)

KOONTZ, Harold, agus Heinz WEIHRICH. Management.-- Ed.9. McGraw-Hill Book, 1988.

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