Van Fleet, D. D. (1994). Contemporary management (3rd ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Van Fleet, David D. Contemporary Management. 3rd ed. Boston: Houghton Mifflin, 1994.
Lua MLA (9ú heag.)Van Fleet, David D. Contemporary Management. 3rd ed. Houghton Mifflin, 1994.
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