Immunomodulatory Effect of Methanolic Extract and Ethyl Acetate Fraction of Bengkoang (Pachyrhizus erosus (L.) Urban) Tuber in Mice, Sujono, Tanti Azizah, Nurrochmad Arief, Lukitaningsih Endang, and Nugroho Agung Endro , Pharmacognosy Journal, January 2021, Volume 13, Issue 1, p.59-65, (2021)