SERVET KILIÇ, ÜNAL ÇAKIROĞLU, MEHMET BARIŞ HORZUM. Investigating Teaching, Social and Cognitive Presence of Students in Synchronous Online Environments. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 7, n. 2, p. 350–364, 2016. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/130. Acesso em: 7 may. 2024.