Apte, G. (2004). Services Marketing. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Apte, Govind. Services Marketing. New Jersey: John Wiley & Sons, 2004.
Lua MLA (9ú heag.)Apte, Govind. Services Marketing. John Wiley & Sons, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.