http://e-repository.perpus.iainsalatiga.ac.id/9059
http://e-repository.perpus.iainsalatiga.ac.id/9199
http://e-repository.perpus.iainsalatiga.ac.id/13037
http://e-repository.perpus.iainsalatiga.ac.id/18114
http://e-repository.perpus.iainsalatiga.ac.id/19816