Purbaningrum KA, Safitri PT. PENGEMBANGAN BAHAN AJAR LEMBAR AKTIVITAS TERSTRUKTUR PADA MATA KULIAH TRIGONOMETRI. SENATIK [Internet]. 2019 Aug. 20 [cited 2025 Apr. 19];4:430-5. Available from: http://103.98.176.39/index.php/senatik/article/view/90