Lekatompessy, Felicia. “An Evaluation of Survival English Textbook Used in Teaching Speaking for First Semester Students in English Education Study Program”. IJET (Indonesian Journal of English Teaching) 8, no. 2 (December 31, 2019): 73-78. Accessed August 11, 2020. http://jurnalftk.uinsby.ac.id/index.php/IJET/article/view/490.