Gaya APA

Knox, S, ;, M, S, ;, P, A, ;, P, J, ;, R, L. (2003). Customer Relationship Management . NewYork: Routledge.

Gaya MLA

Knox, Simon, ;, Maklan,, Stan, ;, Payne,, Adrian, ;, Peppard,, Joe, ;, Ryals,, Lynette. "Customer Relationship Management". NewYork: Routledge, 2003. Text.