Vu, Linh Chi, Thi Ngoc Hue Nguyen, and Ngoc Trinh Luu. 2007. “Root and Tuber Crops in Vietnam: Focus on Yam Germplasm”. Ethnobotany Research and Applications 5 (December):259-72. https://ethnobotanyjournal.org/index.php/era/article/view/136.