Ukwungwu, M.N. and Joshi, R.C. (1992) Evaluation of Asian gall midge resistant varieties for the African rice gall midge. International Rice Research Newsletter, 17, 12.
 Ukwungwu, M.N. (1990) Efficacy of granular isazofos against rice gall midge in Nigeria. Crop Protection, 9, 252-254. doi:10.1016/0261-2194(90)90100-L
 Hoque, N.Z. (1987) Upland rice development in four west African Countries (Nigeria, Ghana, Liberia and the Gambia). International Rice Commission Newsletter, 36, 32.
 Bendixen, L.E., Reynold, D.A. and Riedel, R.M. (1979) Annotated bibliography of weeds as reservoirs for organisms affecting different crops, 1. Nematodes. Ohio Agricultural Research Development Centre, Wooster.