Wanapat, M., C. Promkot, and S. Khampa. 2006. “Supplementation of Cassava Hay As a Protein Replacement for Soybean Meal in Concentrate Supplement for Dairy Cows”. Pakistan Journal of Nutrition 6 (1): 68-71. https://doi.org/10.3923/pjn.2007.68.71.