Citazione Stile APA (7a Edizione)

Cowell, D. W. (1993). Services marketing (3rd ed.). Butterworth-Heinemann.

Citazione stile Chigago Style (17a edizione)

Cowell, Donald W. Services Marketing. 3rd ed. Oxford: Butterworth-Heinemann, 1993.

Citatione MLA (9a ed.)

Cowell, Donald W. Services Marketing. 3rd ed. Butterworth-Heinemann, 1993.