http://e-repository.perpus.iainsalatiga.ac.id/10910
http://e-repository.perpus.iainsalatiga.ac.id/10907
http://e-repository.perpus.iainsalatiga.ac.id/11297
http://e-repository.perpus.iainsalatiga.ac.id/12461
http://e-repository.perpus.iainsalatiga.ac.id/8283