Palmer, S; Holt, D; Bray, S (2008), "Does the discussion help? the impact of a formally assessed online discussion on final student results", British Journal of Educational Technology, 39 (5): 847–58, doi:10.1111/j.1467-8535.2007.00780.x, hdl:10536/DRO/DU:30017812.
Palmer, S; Holt, D; Bray, S (2008), "Does the discussion help? the impact of a formally assessed online discussion on final student results", British Journal of Educational Technology, 39 (5): 847–58, doi:10.1111/j.1467-8535.2007.00780.x, hdl:10536/DRO/DU:30017812.