Cita APA

Singh, P., & Kumar, J. N. (2009). customer relationship management (CRM). Regal.

Citación estilo Chicago

Singh, P.P, y Jinender N. Kumar. Customer Relationship Management (CRM). New Delhi: Regal, 2009.

Cita MLA

Singh, P.P, y Jinender N. Kumar. Customer Relationship Management (CRM). Regal, 2009.