Cita APA (7th ed.)

Perraton, H., Creed, C., & Robinson, B. (2002). Teacher education guidelines: Using open distance learning. UNESCO.

Cita Chicago (17th ed.)

Perraton, Hilary, Charlote Creed, i Bernadette Robinson. Teacher Education Guidelines: Using Open Distance Learning. Paris, Francia: UNESCO, 2002.

Cita MLA (9th ed.)

Perraton, Hilary, et al. Teacher Education Guidelines: Using Open Distance Learning. UNESCO, 2002.