Van Fleet, D. D. (1991). Contemporary management (2nd ed.). Hougton Mifflin.
Lua i Stíl Chicago (17ú heag.)Van Fleet, David D. Contemporary Management. 2nd ed. Boston: Hougton Mifflin, 1991.
Lua MLA (9ú heag.)Van Fleet, David D. Contemporary Management. 2nd ed. Hougton Mifflin, 1991.
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