APA-viite (7. p.)

Buttle, F., & Maklan, S. (2019). Customer Relationship Management: Concepts And Technologies (4th.). Routledge.

Chicago-viite (17. p.)

Buttle, Francis, ja Stan Maklan. Customer Relationship Management: Concepts And Technologies. 4th. New York: Routledge, 2019.

MLA-viite (9. p.)

Buttle, Francis, ja Stan Maklan. Customer Relationship Management: Concepts And Technologies. 4th. Routledge, 2019.