Peelen, E. (2005). Customer relationship management. Pearson.
Chicagoスタイル(17版)引用形式Peelen, Ed. Customer Relationship Management. New Delhi: Pearson, 2005.
MLA(9版)引用形式Peelen, Ed. Customer Relationship Management. Pearson, 2005.
警告: この引用は必ずしも正確ではありません.