http://e-repository.perpus.iainsalatiga.ac.id/15098
http://e-repository.perpus.iainsalatiga.ac.id/13779
http://e-repository.perpus.iainsalatiga.ac.id/16240
http://e-repository.perpus.iainsalatiga.ac.id/16121
http://e-repository.perpus.iainsalatiga.ac.id/16155