APA-viite (7. p.)

Buttle, F., & Maklan, S. (2022). Customer Relationship management (4th.). Routledge.

Chicago-viite (17. p.)

Buttle, Francis, ja Stan Maklan. Customer Relationship Management. 4th. New York: Routledge, 2022.

MLA-viite (9. p.)

Buttle, Francis, ja Stan Maklan. Customer Relationship Management. 4th. Routledge, 2022.