Gaya APA
Arifin,Ali. (2003).
Viral marketing (2003).
Yogyakarta:
Andi jogjakarta.
Gaya Chicago
Arifin,Ali.
Viral marketing.
2003
Yogyakarta:
Andi jogjakarta,
2003.
Text.
Gaya MLA
Arifin,Ali.
Viral marketing.
2003
Yogyakarta:
Andi jogjakarta,
2003.
Text.
Gaya Turabian
Arifin,Ali.
Viral marketing.
2003
Yogyakarta:
Andi jogjakarta,
2003.
Print.