Hunsaker, P. L. (2001). Training in management skills. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Hunsaker, Phillip L. Training in Management Skills. Prentice Hall, 2001.
Lua MLA (8ú heag.)Hunsaker, Phillip L. Training in Management Skills. Prentice Hall, 2001.
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