http://e-repository.perpus.iainsalatiga.ac.id/13304
http://e-repository.perpus.iainsalatiga.ac.id/13275
http://e-repository.perpus.iainsalatiga.ac.id/13427
http://e-repository.perpus.iainsalatiga.ac.id/13263
http://e-repository.perpus.iainsalatiga.ac.id/13342