Baron, D. P. (2006). Business and its environment (5th ed.). Pearson/Prentice Hall.
Cita Chicago (17th ed.)Baron, David P. Business and Its Environment. 5th ed. Upper Saddle River, New Jersey: Pearson/Prentice Hall, 2006.
Cita MLA (9th ed.)Baron, David P. Business and Its Environment. 5th ed. Pearson/Prentice Hall, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.