http://e-repository.perpus.iainsalatiga.ac.id/7764/
http://e-repository.perpus.iainsalatiga.ac.id/8496
http://e-repository.perpus.iainsalatiga.ac.id/8600
http://e-repository.perpus.iainsalatiga.ac.id/8717
http://e-repository.perpus.iainsalatiga.ac.id/8960