Taufiq, I. and Agustito, D. 2021. Uji Kelayakan Modul Trigonometri Berbasis Ajaran Tamansiswa. Mosharafa: Jurnal Pendidikan Matematika. 10, 2 (May 2021), 281–290. DOI:https://doi.org/10.31980/mosharafa.v10i2.661.