Englishtina, I., M. Saleh, W. Warsono, and D. Rukmini. “Developing Socio-Cultural Scaffolding Model to Elicit Learners’ Speech Production”. The Journal of Educational Development, Vol. 4, no. 1, 1, pp. 46-59, https://journal.unnes.ac.id/sju/jed/article/view/11005.