I. R. Yanti, S. Trisna, U. Usmeldi, and R. Ramli, “PRELIMINARY RESEARCH PENGEMBANGAN MODUL BERBASIS PROBLEM BASED INSTRUCTION PADA MATA KULIAH FISIKA MATEMATIKA I DI STKIP PGRI SUMATERA BARAT”, PROSIDING SNF, vol. 5, pp. SNF2016–RND, Oct. 2017.