Keenoy, K., Levene, M., de Freitas, S. <https://researchrepository.murdoch.edu.au/view/author/de Freitas, Sara.html>, Montagne, L., Emans, B., Schooneveldt, J., Pernin, J-P, Eyssautier, C., Jones, A., Brasher, A., Waycott, J., Turcsányi -Szabó, M. and Bodnar, E (2004) Collaborative trails and group profiling within an e-Learning environment. EU Kaleidoscope Trails Deliverable 22.4.2,2004, 引用: 2