Cita APA (7a ed.)

Berry, L. L., & Parasuraman, A. (1991). Marketing services: Competing through quality. Free Press [etc.].

Cita Chicago Style (17a ed.)

Berry, Leonard L., y A. Parasuraman. Marketing Services: Competing Through Quality. New York [N.Y.]: Free Press [etc.], 1991.

Cita MLA (9a ed.)

Berry, Leonard L., y A. Parasuraman. Marketing Services: Competing Through Quality. Free Press [etc.], 1991.