Baron, D. P. (2010). Business and its environment (6th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Baron, David P. Business and Its Environment. 6th ed. Upper Saddle River, N.J.: Prentice Hall, 2010.
Lua MLA (8ú heag.)Baron, David P. Business and Its Environment. 6th ed. Prentice Hall, 2010.
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