Verma, H. V. (2008). Services marketing. Pearson.
Cita Chicago (17th ed.)Verma, Harsh V. Services Marketing. Delhi: Pearson, 2008.
Cita MLA (9th ed.)Verma, Harsh V. Services Marketing. Pearson, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.