APA (7th ed.) Zitazioa
Das Gupta, V. (1998). Marketing mantra: The real story of direct marketing in India. Prentice-Hall of India.
Chicago Style (17th ed.) Zitazioa
Das Gupta, Vaswar. Marketing Mantra: The Real Story of Direct Marketing in India. New Delhi: Prentice-Hall of India, 1998.
MLA (9th ed.) Zitazioa
Das Gupta, Vaswar. Marketing Mantra: The Real Story of Direct Marketing in India. Prentice-Hall of India, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.