Cita APA (7a ed.)

Keegan, D. (2001). Foundations of distance education (3a ed.). Routledge.

Cita Chicago Style (17a ed.)

Keegan, Desmond. Foundations of Distance Education. 3a ed. Londo: Routledge, 2001.

Cita MLA (8a ed.)

Keegan, Desmond. Foundations of Distance Education. 3a ed. Routledge, 2001.