R. Vidad, Sean, and Danilda H. Duran. “Energy Values of Corn and Rice Bran and Energy Levels for Ducks – Basis in Establishing Energy Requirement for Improved Philippine Mallard Duck”. CLSU International Journal of Science and Technology 6, no. 1 (February 28, 2022): 11–22. Accessed April 19, 2026. https://ijst.clsu.edu.ph/index.php/ijst/article/view/v6n1_02.