Muslim, M., M. Giatman, M. Muskhir, H. Effendi, and D. Setiawan. “Information Technology Development in Alumni Search: Validity Analysis”. INVOTEK: Jurnal Inovasi Vokasional Dan Teknologi, vol. 22, no. 3, Oct. 2022, pp. 139-48, doi:10.24036/invotek.v22i3.1069.