Effect of Gamma Irradiation on Suruhan (Peperomia pellucida (L.) Kunth) Herb Powder, Yusuf, Mubarika Sekarsari, Wulandari Intan, Amelia Lili,, Noviani Arikadia,, and Mun?im Abdul , Pharmacognosy Journal, February 2017, Volume 9, Issue 2, p.239-243, (2017)