Gaya APA

Makkar, U., Makkar, H, K. (2013). CRM Customer Relationship Mangement (Cet. 2). India: Mc Graw Hill.

Gaya MLA

Makkar, Urvashi., Makkar, Harinder, K. "CRM Customer Relationship Mangement". Cet. 2 India: Mc Graw Hill, 2013. Text.