TeeY. Y., MatK., AdamM. A., RusliN. D., HasnitaC. H., and Mohd KhalidH. N., “Preliminary Study of Buffer Ratio in Protein Extraction from Placental Cotyledons of Kedah-Kelantan Cattle”, Trop. Anim. Sci. J., vol. 43, no. 4, pp. 300-305, Dec. 2020.