APA-viite (7. p.)

Peelen, E. (2005). Customer relationship management. Prentice Hall.

Chicago-viite (17. p.)

Peelen, Ed. Customer Relationship Management. Harlow, England: Prentice Hall, 2005.

MLA-viite (9. p.)

Peelen, Ed. Customer Relationship Management. Prentice Hall, 2005.