Suryani, Heni, M. Zain, R.W.S. Ningrat, and N. Jamarun. 2015. “Supplementation of Direct Fed Microbial (DFM) on in Vitro Fermentability and Degradability of Ammoniated Palm Frond”. Pakistan Journal of Nutrition 15 (1): 89–94. https://doi.org/10.3923/pjn.2016.89.94.