Ekenyem, B.U., and T.K.O. Obih. “Performance and Cost Evaluation of Substituting Bambara Seed [Vigna Subterranean (L) Verdc] Offal for Soyabean Meal in the Diets of Broiler Starter Chicks”. International Journal of Poultry Science, vol. 9, no. 4, Mar. 2010, pp. 349–351, https://doi.org/10.3923/ijps.2010.349.351.