1. Ababio, O.Y. 1990. Organic chemistry. New school chemistry. Isiokwe: Africana-Fep publishers Limited.
2. Adeleke, R.O. and O.A. Abiodun. 2010. Physico-chemical properties of commercial local beverages in Osun State, Nigeria. Pakistan Journal of Nutrition 9: 853–855.
3. Arom, S., N. Fernando, S. Fürniss, S. Le Bomin, F. Marandola, and J. Molino. 2008. Une perspective interdisciplinaire. In: Catégories et Catégorisations, ed. Alvarez-Pereyre, F., 273-313. Peeters: Leuven-Paris-Dudley.
4. Ayogu, T.E. 1999. Evaluation of the performance of a yeast isolate from Nigerian palm wine in wine production from pineapple fruits. Bioresource Technology 69: 189–190. DOI: https://doi.org/10.1016/S0960-8524(99)00162-5.
5. Bahuchet, S. 1992. Histoire d’une civilisation forestière I. Dans la forêt d’Afrique Centrale, les Pygmées Aka et Baka. Louvain-Paris: Peeters-Selaf.