M. R. Illiyin, M. Mahyana, and M. Azzarkasyi, “Development of a Digital Test Instrument for the Integrated Science Course at Universitas Serambi Mekkah”, JEIST, vol. 1, no. 1, pp. 25–30, Jun. 2026, doi: 10.69548/jeist.v1i1.76.2026.