Não informado. (1980). Distance education. University of Southern Queensland, Distance Education Centre.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Distance Education. Toowoomba, Australia: University of Southern Queensland, Distance Education Centre, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Distance Education. University of Southern Queensland, Distance Education Centre, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.