Prasetya, F. 2013. Karakteristik dan Stabilitas Sediaan Gel Mulut Berbahan Aktif Ekstrak Daun Sirih Hitam Berbasis Hydroxy Ethyl Cellulose (HEC). Journal of Tropical Pharmacy and Chemistry. 2, 2 (Jun. 2013), 83–90. DOI:https://doi.org/10.25026/jtpc.v2i2.52.