References
- Bernard , R. , Pelto , P. , Werner , O. , Boster , J. , Romney , K. , Johnson , A. , Ember , C. and Kasakoff , A. 1986 . The construction of primary data in cultural anthropology . Current Anthropology , 27 (4) : 382 – 396 .
- Bronowski , J. 1961 . Science and Human Values: , London : Hutchinson. .
- Brain , W. R. 1965 . Science and antiscience . Science. , 148 : 192 – 198 .
- Calvert , J. 1986 . “ Research in Canadian distance education ” . In Distance Education in Canada , Edited by: Mugeridge , I. and Kaufman , D. 94 – 100 . London : Croom Helm .
- Campbell , D. T. and Fiske , D. W. 1959 . Convergent and discriminant validation by the miltitrait‐multimethod matrix . Psychological Bulletin , 56 (2) : 81 – 105 .
- Coldeway , A. E. and Coldeway , D. O. 1987 . An extension of PSI through the application of instructional systems design technology . Canadian Journal of Educational Communications , 16 (4) Fall
- Coldeway , D. O. and Spencer , R. E. 1982 . Keller's personalized system of instruction: A search for a basic distance education paradigm . Distance Education , 3 (1) : 51 – 71 .
- Keegan , D. 1986 . The Foundations of Distance Education. , London : Croom Helm. .
- Keller , F. S. 1968 . Good bye teacher . Journal of Applied Behavior Analysis , 1 : 78 – 89 .
- Kulik , J. A. , Julik , C. C. and Cohen , P. A. 1979 . Meta‐analysis of outcome studies of Keller's personalized system of instruction. . American Psychologist , 34 : 307 – 318 .
- Peters , O. 1983 . “ Distance teaching and industrial production: A comparative interpretation in outline ” . In Distance Education: International Perspectives , Edited by: Sewart , D. , Keegan , D. and Holmberg , B. 95 – 113 . London : Croom Helm .
- Mathison , S. 1988 . Why triangulate? . Educational Researcher , March : 13 – 17 .
- Moore , M. 1985 . Some observations on current research in distance education . Epistolodidaktika , I : 35 – 62 .
- Miles , M. B. and Huberman , A. M. 1984 . Qualitative data analysis. , Beverly Hills : Sage. .