http://e-repository.perpus.iainsalatiga.ac.id/11661
http://e-repository.perpus.iainsalatiga.ac.id/11796
http://e-repository.perpus.iainsalatiga.ac.id/12204
http://e-repository.perpus.iainsalatiga.ac.id/12144
http://e-repository.perpus.iainsalatiga.ac.id/13304