Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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