H. J. OSARUMWENSE and C. P. DURU, “Assessment of model fit for 2016 and 2017 biology multiple choice test items of the national business and technical examination board”, Int J Innov Educ Res, vol. 7, no. 4, pp. 12–22, Apr. 2019, doi: 10.31686/ijier.vol7.iss4.1319.