“FORMULASI DAN UJI STABILITAS FISIK SEDIAAN GEL EKSTRAK BUAH BELIMBING WULUH (Averrhoa Bilimbi L.)”. Journal of Pharmaceutical Science and Herbal Technology, vol. 4, no. 1, July 2019, pp. 4-7, https://ojs.institutnh.ac.id/index.php/jpsht/article/view/200.