http://e-repository.perpus.iainsalatiga.ac.id/6850/
http://e-repository.perpus.iainsalatiga.ac.id/7987/
http://e-repository.perpus.iainsalatiga.ac.id/8324
http://e-repository.perpus.iainsalatiga.ac.id/8373
http://e-repository.perpus.iainsalatiga.ac.id/8383
http://e-repository.perpus.iainsalatiga.ac.id/8270