Paul Justin. (2010). Business Environment: Text and Cases (3rd.). McGraw Hill.
Cita Chicago (17th ed.)Paul Justin. Business Environment: Text and Cases. 3rd. McGraw Hill, 2010.
Cita MLA (9th ed.)Paul Justin. Business Environment: Text and Cases. 3rd. McGraw Hill, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.