Não informado. (1999). Open Praxis. International Council for Distance Education.
Style de citation Chicago (17e éd.)Não informado. Open Praxis. Cambridge, Inglaterra: International Council for Distance Education, 1999.
Style de citation MLA (8e éd.)Não informado. Open Praxis. International Council for Distance Education, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.