Pratt, H. C. (1973). Report on study leave tour April to July 1972: Ninth international conference of International Council on Correspondence Education and visits to various countries. Royal Melbourne Institute of Technology.
Dyfyniad Arddull ChicagoPratt, H. C. Report on Study Leave Tour April to July 1972: Ninth International Conference of International Council on Correspondence Education and Visits to Various Countries. Melbourne: Royal Melbourne Institute of Technology, 1973.
Dyfyniad MLAPratt, H. C. Report on Study Leave Tour April to July 1972: Ninth International Conference of International Council on Correspondence Education and Visits to Various Countries. Royal Melbourne Institute of Technology, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.