Citazione Stile APA (7a Edizione)

Zeithaml, V. A. B. (2013). Services Marketing (7th ed.). Pearson Education.

Citazione stile Chigago Style (17a edizione)

Zeithaml, Valarie A; Bitner. Services Marketing. 7th ed. New Delhi: Pearson Education, 2013.

Citatione MLA (9a ed.)

Zeithaml, Valarie A; Bitner. Services Marketing. 7th ed. Pearson Education, 2013.