APA-referens (7:e uppl.)

Zeithaml, V. A. (2013). Services Marketing (6th.). McGraw Hill.

Chicago-referens (17:e uppl.)

Zeithaml, Valarie A. Services Marketing. 6th. New Delhi: McGraw Hill, 2013.

MLA-referens (9:e uppl.)

Zeithaml, Valarie A. Services Marketing. 6th. McGraw Hill, 2013.