Author(s): Siti Afrah Siregar, Miftahul Husnah, Syahwin Syahwin, Sri Fitriyani Sihombing, Erwinsyah Tanjung,

Date: Feb 18, 2019

Source: PASCAL (Journal of Physics and Science Learning)

Publisher: Program Studi Pendidikan Fisika, Universitas Islam Sumatera Utara