4 1 20 SUGIHARTONO Primary Author Farida Harahap Additional Author Kartika Nur Fathiyah Additional Author Siti Rohmah Nurhayati Additional Author mixed material 979841800X Siti Rohmah Primary Author mixed material 9786024076047 Siti Rohmah Additional Author mixed material 9786027641440 Muhammad Amien Additional Author Widya Ristanti Additional Author Larasati Additional Author Siti Nurrohmah Additional Author Erna Agustina Additional Author Dewi Setyawati Nurfadhilah Additional Author Yuli Pratiwi Additional Author mixed material 9786023171248