1 "사이버대학에서 학업성취도에 영향을 미치는 학습자 요인분석:정보사회의 이론과 실제" 진한도서. 2004
2 "Using communications media in open and flexible learning" 1994
3 "The foundations of effective practice" Jossey-Bass 1991
4 "Supporting communities of learners with technology:a vision for integrating technology with learning in schools" 35 (35): 60-63, 1995
5 "Student persistence in a LIS distance education program" 35 (35): 253-269, 2004
6 "Researching dropout in distance education" 8 (8): 95-101, 1987
7 "Recent research at the Open Polytechnic of New Zealand Research in Distance Education" 5-6, 1992
8 "Open learning environments: foundations, methods, and models" Erlbaum. 1999
9 "Open Learning Courses for Adults A Model of Student Progress" Educatoinal Technology Publications 1995
10 "Online drop rates revisited" 2002
1 "사이버대학에서 학업성취도에 영향을 미치는 학습자 요인분석:정보사회의 이론과 실제" 진한도서. 2004
2 "Using communications media in open and flexible learning" 1994
3 "The foundations of effective practice" Jossey-Bass 1991
4 "Supporting communities of learners with technology:a vision for integrating technology with learning in schools" 35 (35): 60-63, 1995
5 "Student persistence in a LIS distance education program" 35 (35): 253-269, 2004
6 "Researching dropout in distance education" 8 (8): 95-101, 1987
7 "Recent research at the Open Polytechnic of New Zealand Research in Distance Education" 5-6, 1992
8 "Open learning environments: foundations, methods, and models" Erlbaum. 1999
9 "Open Learning Courses for Adults A Model of Student Progress" Educatoinal Technology Publications 1995
10 "Online drop rates revisited" 2002
11 "Learner issues with WWW-based systems" 5 (5): 410-417, 1999
12 "Identifying predictors of academic persistence in distance education" 17 (17): 59-66, 2003
13 "Helping disadvantaged students" 18 : 77-85, 2000
14 "EEvaluation of effective interventions to solve the dropout problem in adult distance education" 1999 (1999): 51-55, 1999
15 "Distance education drop-out: what can we do?" Murdoch University 1997
16 "As distance education comes of age, the challenge is keeping the students,Chronicle of Higher Education" 2000