1. New directions in the evaluation of the effectiveness of educational technology;Heinecke,1999
2. Distance education in higher education institutions: Incidence, audiences, and plans to expand;National Center for Education Statistics [NCES],1998
3. Factors keeping institutions from starting or expanding distance education course offerings;National Center for Education Statistics [NCES],1998
4. Distance Education Program Goals;National Center for Education Statistics [NCES],1998