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Sefriani, Rini (2022) Validity testing of blended learning based on android smartphones in computer device maintenance course. Journal of Physics : Conference Series. (Unpublished)
Wijaya, Indra and Sefriani, Rini and Menrisal, Menrisal (2020) Buku Ajar : Pemeliharaan Perangkat Komputer. -. (Unpublished)