Não informado. (1999). Open Praxis. International Council for Distance Education.
Chicagoスタイル(17版)引用形式Não informado. Open Praxis. Cambridge, Inglaterra: International Council for Distance Education, 1999.
MLA(8版)引用形式Não informado. Open Praxis. International Council for Distance Education, 1999.
警告: この引用は必ずしも正確ではありません.