Hjelm, J. (2008). Why IPTV?: Interactivity, technologies and services. Wiley.
Cita Chicago (17th ed.)Hjelm, Johan. Why IPTV?: Interactivity, Technologies and Services. Chichester, U.K: Wiley, 2008.
Cita MLA (9th ed.)Hjelm, Johan. Why IPTV?: Interactivity, Technologies and Services. Wiley, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.