Tervakari, Anne-Maritta, Kirsi Silius, Teemo Tebest, Jarno Marttila, Meri Kailanto, and Jukka Huhtamäki. 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.