Kashefia, Hamidreza, Zaleha Ismail, and Yudariah Mohammad Yusof. “Using Blended Learning to Support Students Thinking Powers in Multivariable Culculus”. Sains Humanika 57, no. 1 (December 15, 2011). Accessed December 20, 2024. https://sainshumanika.utm.my/index.php/sainshumanika/article/view/214.