Danskin และผู้แต่งคนอื่นๆ. 1981. The open university as a route to higher education expansion in developing countries : the case of Ramkhamhaeng University, Thailand. London:Institute of Education London University;

Danskin และผู้แต่งคนอื่นๆ. The open university as a route to higher education expansion in developing countries : the case of Ramkhamhaeng University, Thailand. London:Institute of Education London University, 1981.

Danskin และผู้แต่งคนอื่นๆ. (1981) The open university as a route to higher education expansion in developing countries : the case of Ramkhamhaeng University, Thailand (รายงานผลงานวิจัย). Institute of Education London University:London.