Sudi Prayitno, St. Suwarsono, Tatag Yuli Eko Siswono, Sri Subarinah, Ratih Ayu Apsari, G Gunawan 2020. Mathematical Communication Ability of Junior High School Students in Solving Mathematics Problems. International Journal of Advanced Science and Technology. 29, 05 (May 2020), 6700 - 6707.