Andrie, M., Taurina, W., & Wulandari, M. (2021). Stability Test of Ointment Protein Combination Snakehead Fish (Channa striata) and Ethanol Extract Leaves (Piper betle L.) Using Kjeldahl Method. JURNAL ILMU KEFARMASIAN INDONESIA, 19(2), 147-153. doi:10.35814/jifi.v19i2.799