Richard Darlene D. (2002). Customer Response Management Handbook: Building, rebuilding and improving your results. Tata McGraw Hill Publishing com Ptd.

Richard Darlene D. Customer Response Management Handbook: Building, Rebuilding and Improving Your Results. New Dehli, India: Tata McGraw Hill Publishing com Ptd, 2002.

Richard Darlene D. Customer Response Management Handbook: Building, Rebuilding and Improving Your Results. Tata McGraw Hill Publishing com Ptd, 2002.