Ejenma, E., et al. “Effect of Proximate Space and Sources of Manure on the Yield of Egg Plant (Garden Egg) (Solanum Melongena) in Ishiagu, Ebonyi State, Nigeria”. International Journal of Social Sciences, vol. 13, no. 4, Dec. 2019, pp. 148-55, https://ijss.com.ng/index.php/home/article/view/118.