http://e-repository.perpus.iainsalatiga.ac.id/15379
http://e-repository.perpus.iainsalatiga.ac.id/13449
http://e-repository.perpus.iainsalatiga.ac.id/11607
http://e-repository.perpus.iainsalatiga.ac.id/17602
http://e-repository.perpus.iainsalatiga.ac.id/17278