Ozioko, Sylvester Ugwu, et al. “Evaluating the Impact of Poultry Droppings and Cow Dung Manures on Yellow Pepper (capsicum Frutescens) Yield”. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , vol. 5, no. 4, Mar. 2024, pp. 109-13, https://fnasjournals.com/index.php/FNAS-JSI/article/view/311.