Setiawati, Putri, Sudi Prayitno, and Sri Subarinah. 2020. “Pengaruh Model Pembelajaran Kooperatif Tipe Numbered Head Together Terhadap Kemampuan Komunikasi Matematika Siswa SMP”. Mandalika Mathematics and Educations Journal 2 (2):131-40. https://doi.org/10.29303/jm.v2i2.1671.