Harahap, K. A. and Surya, E. (2017) “Application of Cooperative Learning Model With Type of Two Stay Two Stray to Improve Results of Mathematics Teaching”, International Journal of Sciences: Basic and Applied Research (IJSBAR), 33(2), pp. 156–165. Available at: https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7370 (Accessed: 19 May 2024).