Kumar, V. (2008). Managing Customers for Profit. Pearson.
Cita Chicago (17th ed.)Kumar, V. Managing Customers for Profit. New Jersey: Pearson, 2008.
Cita MLA (9th ed.)Kumar, V. Managing Customers for Profit. Pearson, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.