APA
                    Roger J Baran, D P Strunk, . (2008). Customer Relationship Management. New Delhi: Cengage.
                
                    Chicago
                    Roger J Baran, D P Strunk, . 2008. Customer Relationship Management. New Delhi: Cengage.
                
                    Harvard
                    Roger J Baran, D P Strunk, . (2008). Customer Relationship Management. New Delhi: Cengage.
                
                    MLA
                    Roger J Baran, D P Strunk, . Customer Relationship Management. New Delhi: Cengage. 2008.