Não informado. (1980). Distance education. University of Southern Queensland, Distance Education Centre.
Citação do estilo Chicago (17ª ed.)Não informado. Distance Education. Toowoomba, Australia: University of Southern Queensland, Distance Education Centre, 1980.
Citação MLA (8ª ed.)Não informado. Distance Education. University of Southern Queensland, Distance Education Centre, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.