Diko, N. I. A., H. Jusuf, N. W. T. Pido, J. R. Hasan, and N. Andi. “A Need Analysis of Interactive PowerPoint English Learning Media for Vocational Students”. FOSTER: Journal of English Language Teaching, Vol. 7, no. 2, Apr. 2026, pp. 562-73, doi:10.24256/foster-jelt.v7i2.406.