Eko W B, Nugroho. 2021. “Aktivitas Antibakteri Ekstrak Kayu Siwak (Salvadora Persica) Terhadap Bakteri Staphylococcus Epidermidis”. Oceana Biomedicina Journal 4 (2):118-32. https://doi.org/10.30649/obj.v4i2.14.