Novelina, N., Sayuti, K. and Rahmadani, F. N. (2013) “Characteristics of Fermentation Drink made from Juice of Winged Bean Sprouts (Psophocarpus tetragonolobus) and Red Sweet Potato (Ipomoea batatas)”, International Journal on Advanced Science, Engineering and Information Technology, 3(6), pp. 359–362. doi: 10.18517/ijaseit.3.6.341.