Cita APA (7th ed.)

GUPTA P K. (2007). SERVICES MARKETING (6TH.). EVEREST PUBLISHING HOUSE.

Cita Chicago (17th ed.)

GUPTA P K. SERVICES MARKETING. 6TH. PUNE: EVEREST PUBLISHING HOUSE, 2007.

Cita MLA (9th ed.)

GUPTA P K. SERVICES MARKETING. 6TH. EVEREST PUBLISHING HOUSE, 2007.