Adeyemo, A.I., and O. Oyejola. “Performance of Guinea Fowl Numida Meleagris Fed Varying Levels of Poultry Droppings”. International Journal of Poultry Science, vol. 3, no. 5, Apr. 2004, pp. 357–360, https://doi.org/10.3923/ijps.2004.357.360.