Manan, A., 		Hermanto, B., & 		Fatimah, K.
2022 Jul 17.  Analisis Buku Teks Matematika SMK/MAK Kelas X Kurikulum 2013 Edisi Revisi 2017 Materi Perbandingan Trigonometri. Journal of Mathematics Education and Learning. [Online] 2:2