Παραπομπή σε μορφή APA (7η εκδ.)

Wübben, M. (2009). Analytical CRM: Developing and Maintaining Profitable Customer Relationships in Non-Contractual Settings. Gabler.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wübben, Markus. Analytical CRM: Developing and Maintaining Profitable Customer Relationships in Non-Contractual Settings. Wiesbaden: Gabler, 2009.

Παραπομπή σε μορφή MLA (8th εκδ.)

Wübben, Markus. Analytical CRM: Developing and Maintaining Profitable Customer Relationships in Non-Contractual Settings. Gabler, 2009.