Alya, R. ., and A. . Ikhwan. “Mobile-Based Design of Information System for Vocational Internship Activities for Vocational Students”. Sinkron : Jurnal Dan Penelitian Teknik Informatika, vol. 6, no. 4, Oct. 2022, pp. 2361-8, doi:10.33395/sinkron.v7i4.11764.