5 1 10 Arifin, Muhammad Primary Author Saehu, Uun Ahmad Additional Author Rahayu, Enny Additional Author Nasution, Ismail Saleh Additional Author Jamila Additional Author Wahyuni, Sri Additional Author Taufika, Ryan Additional Author Samidi Additional Author Dachi, Surya Wisata Additional Author mixed material 9786236888063 Medan UMSU Press 2020 Pi7_Tool_BK15313.png.jpg.jpg Arifin, Muhammad Primary Author Nasution, Ismail Saleh Additional Author Ardilla, Isna Additional Author mixed material 9786232182592 Medan UMSU Press 2019 Microsoft-Word-dan-Excel.jpg.jpg Arifin, Muhammad Additional Author Elfrianto Primary Author Nasrum Additional Author mixed material 9786234083040 Medan UMSU Press 2023 WhatsApp-Image-2023-02-16-at-9.23.24-AM_%282%29.jpeg.jpeg Arifin, Muhammad Primary Author mixed material 9786234080674 Medan UMSU Press 2021 Pi7_Tool_images_1.jpeg.jpeg Arifin, Muhammad Primary Author Elfrianto Additional Author mixed material 9786026997692 Medan UMSU Press 2021 Pi7_Tool_images.jpeg.jpeg