Siregar, V. O., Rusli, R. and Ibrahim, A. (2014) “Aktivitas Imunoglobulin M (IgM) Ekstrak Etanol Kulit Buah Kakao (Theobroma cacao L.) terhadap Tikus Putih (Rattus norvegicus)”, Journal of Tropical Pharmacy and Chemistry, 2(5), pp. 259–263. doi: 10.25026/jtpc.v2i5.74.