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.
警告：這些引文格式不一定是100％准確.