http://e-repository.perpus.iainsalatiga.ac.id/17348
http://e-repository.perpus.iainsalatiga.ac.id/18068
http://e-repository.perpus.iainsalatiga.ac.id/18215
http://e-repository.perpus.iainsalatiga.ac.id/18346
http://e-repository.perpus.iainsalatiga.ac.id/19487