V.kumar & Werner J.reinartz. (2006). Customer relationship management: A database approach. John wiley and sons.
Chicago-стиль цитированияV.kumar and Werner J.reinartz. Customer Relationship Management: A Database Approach. USA: John wiley and sons, 2006.
MLA-цитированиеV.kumar and Werner J.reinartz. Customer Relationship Management: A Database Approach. John wiley and sons, 2006.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.