1. Acha, I. A., Shiwachi, H., Asiedu, R., & Akoroda, M. O. (2004). Effect of auxins on root development in yam (Dioscorea rotundata) vine. Tropical Science, 44, 80–84.
2. Adelberg, J. W., & Simpson, E. P. (2002). Intermittent immersion vessel apparatus and process for plant propagation. In J. Aitken-Christie, T. Kozai & M. A. L. Smith (Eds.), Automation and environmental control in plant tissue culture (pp. 19–26). The Netherlands: Kluwer Academic Publishers.
3. Agele, S. O., Ayankanmi, T. G., & Kikuno, H. (2010). Effects of synthetic hormone substitutes and genotypes on rooting and mini tuber production of vines cuttings obtained from white yam (Dioscorea rotundata, Poir). African Journal of Biotechnology, 9(30), 4714–4724.
4. Aighewi, B.A. (1998). Seed yam (Dioscorea rotundata Poir.) production and quality in selected yam zones of Nigeria. Ph.D. thesis, University of Ibadan, Ibadan, Nigeria. Pp 252.
5. Ajieh, P. C. (2012). Adoption of yam (Dioscorea spp.) minisett technology in Delta State, Nigeria. Agricultura Tropica et Subtropica, 45(2), 84–88.