SHANKER RAVI. (1993). SERVICES MARKETING: THE INDIAN EXPERIENCE. MANAS PUBLICATIONS LTD.
Lua i Stíl Chicago (17ú heag.)SHANKER RAVI. SERVICES MARKETING: THE INDIAN EXPERIENCE. DELHI: MANAS PUBLICATIONS LTD, 1993.
Lua MLA (9ú heag.)SHANKER RAVI. SERVICES MARKETING: THE INDIAN EXPERIENCE. MANAS PUBLICATIONS LTD, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.