Haidet, P; Morgan, RO; O'Malley, K; Moran, BJ; Richards, BF (2004). "A controlled trial of active versus passive learning strategies in a large group setting". Adv Health Sci Educ Theory Pract. 9 (1): 15–27. doi:10.1023/B:AHSE.0000012213.62043.45. PMID14739758. S2CID6413794.
Haidet, P; Morgan, RO; O'Malley, K; Moran, BJ; Richards, BF (2004). "A controlled trial of active versus passive learning strategies in a large group setting". Adv Health Sci Educ Theory Pract. 9 (1): 15–27. doi:10.1023/B:AHSE.0000012213.62043.45. PMID14739758. S2CID6413794.
Haidet, P; Morgan, RO; O'Malley, K; Moran, BJ; Richards, BF (2004). "A controlled trial of active versus passive learning strategies in a large group setting". Adv Health Sci Educ Theory Pract. 9 (1): 15–27. doi:10.1023/B:AHSE.0000012213.62043.45. PMID14739758. S2CID6413794.