APA-referens (7:e uppl.)

Buttle, F. (2009). Customer Relationship Management (7th.). Tata McGraw Hill.

Chicago-referens (17:e uppl.)

Buttle, Francis. Customer Relationship Management. 7th. New Delhi: Tata McGraw Hill, 2009.

MLA-referens (9:e uppl.)

Buttle, Francis. Customer Relationship Management. 7th. Tata McGraw Hill, 2009.