Mariani, R., Soediro, I.S., Ihsan, S., Eva, S. and Nuraisyah, D. 2013. Antioxidant Activity and Antocyanin Derivatives Study of Red Katuk (Euphorbia cotinifolia L.) Leaves. Acta Pharmaceutica Indonesia. 38, 2 (Jun. 2013), 62-66. DOI:https://doi.org/10.5614/api.v38i2.5212.