Beermann, Donald H., y Frank R. Dunshea. «CÁC CH?T H? TR? CHUY?N HÓA (METABOLIC MODIFIERS) S? D?NG TRONG CH?N NUÔI». Council for Agricultural Science and Technology (CAST) (noviembre 5, 2006). Accedido julio 1, 2026. https://publications.cast-science.org/CAST/article/view/154.