Burton, Richard R.; Brown, John Seely (1979). „An investigation of computer coaching for informal learning activities”. International Journal of Man-Machine Studies. 11 (1): 5—24. ISSN0020-7373. doi:10.1016/S0020-7373(79)80003-6.
worldcat.org
Burton, Richard R.; Brown, John Seely (1979). „An investigation of computer coaching for informal learning activities”. International Journal of Man-Machine Studies. 11 (1): 5—24. ISSN0020-7373. doi:10.1016/S0020-7373(79)80003-6.