S. Anka, Shahid, Aniah, Anthony, Adamu, Z. Evuti, and Adeyeye, Mercy. 2021. “Impact of Teacher Demonstration Video On Polytechnic Students’ Achievement in Shorthand in Zamfara State”. Kashere Journal of Education 2 (2):267-76. https://journals.fukashere.edu.ng/index.php/kje/article/view/719.