Sulastri, Y.L., Lestari, Z.W. and Hakim, L.L. 2015. THE IMPLEMENTATION OF M-LEARNING IN LEARNING CALCULUS II. PEOPLE: International Journal of Social Sciences. 1, 1 (Jul. 2015), 531–541. DOI:https://doi.org/10.20319/pijss.2015.s11.531541.