Παραπομπή APA

Kumar, V. (2013). Profitable customer engagement: Concept, metrics and strategies. Sage response.

Παραπομπή Chicago Style

Kumar, V. Profitable Customer Engagement: Concept, Metrics and Strategies. New Delhi: Sage response, 2013.

Παραπομπή MLA

Kumar, V. Profitable Customer Engagement: Concept, Metrics and Strategies. Sage response, 2013.