http://e-repository.perpus.iainsalatiga.ac.id/10404
http://e-repository.perpus.iainsalatiga.ac.id/10452
http://e-repository.perpus.iainsalatiga.ac.id/10485
http://e-repository.perpus.iainsalatiga.ac.id/10190
http://e-repository.perpus.iainsalatiga.ac.id/10675