Tervakari, A.-M., Silius, K., Tebest, T., Marttila, J., Kailanto, M., & Huhtamäki, J. (2012). Peer Learning in Social Media Enhanced Learning Environment. International Journal of Emerging Technologies in Learning (iJET), 7(3), pp. 35–42. https://doi.org/10.3991/ijet.v7i3.2173