MAWAK, Joseph John; 						MUSTAPHA, Abbas Y.; 						WAKJISSA, Sayita S.G..
 Demographic Characteristics and Differential Item Functioning of Economics Achievement Test in Plateau State, Nigeria.
<strong>NIU Journal of Humanities</strong>, [S.l.], v. 4, n. 2, p. 53-69, july 2019.
ISSN 3007-1712.
Available at: &lt;<a href="https://kampalajournals.ac.ug/ojs/index.php/niuhums/article/view/548" target="_new">https://kampalajournals.ac.ug/ojs/index.php/niuhums/article/view/548</a>&gt;. Date accessed: 10 june 2026.