Cita APA (7a ed.)

Freeman, J., & Lessiter, J. (2002). Ease of use and knowledge of digital and interactive TV: Results. s.n.

Cita Chicago Style (17a ed.)

Freeman, Jonathan, y Jane Lessiter. Ease of Use and Knowledge of Digital and Interactive TV: Results. [London: s.n, 2002.

Cita MLA (9a ed.)

Freeman, Jonathan, y Jane Lessiter. Ease of Use and Knowledge of Digital and Interactive TV: Results. s.n, 2002.