Cita APA

Buttle, F. (2009). Customer relationship management: Concepts and technologies (2nd ed.). Routledge.

Citación estilo Chicago

Buttle, Francis. Customer Relationship Management: Concepts and Technologies. 2nd ed. New York: Routledge, 2009.

Cita MLA

Buttle, Francis. Customer Relationship Management: Concepts and Technologies. 2nd ed. Routledge, 2009.