Vanessa, Mafouo Sonhafouo, Kana Jean Raphaël, and Nguepi Dongmo Kissel. 2019. “Preservative Effects of Neem Oil (Azadirachta Indica) on Farm-Mixed Poultry Feed”. International Journal of Livestock Research 9 (3). India:49-61. https://doi.org/10.5455/ijlr.20181027101318.