1Ashok Banerji (1999) Performance Support in Perspective. Performance Improvement, 38(7) 6- 9.
2Gary J. Dikelman(2000). The state of the practice. Performance Improvement, 39(6) 7 - 17.
3Robert A. Reiser(2001) . A History of Instructional Design and Technology: Part Ⅰ: A History of Instructional Media. Educational Technology Research and Development, 49 ( 1 ), 53-64.
4Robert A. Reiser(2001) . A History of Instructional Design and Technology: Part Ⅱ: A History of Instructional Design. Educational Technology Research and Development, 49 (2), 57-67.
5Wild Martyn(2000) . Designing and evaluationg an educational performance support system. British Journal of Educational Technology, 31 ( 1 ),5-16.
