OKAGBARE, Freedom, P. A.U. Ossai, Publishing PUO. ASSESSMENT OF DIFFERENTIAL ITEM FUNCTIONING IN PHYSICS MULTIPLE CHOICE USED BY WAEC AMONG SENIOR SECONDARY SCHOOL STUDENTS IN DELTA STATE. WAJIR [Internet]. 2023 Jul. 21 [cited 2024 Oct. 13];1(2):1-20. Available from: https://www.openjournals.ijaar.org/index.php/wajir/article/view/32