APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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