http://e-repository.perpus.iainsalatiga.ac.id/13154
http://e-repository.perpus.iainsalatiga.ac.id/17212
http://e-repository.perpus.iainsalatiga.ac.id/17447
http://e-repository.perpus.iainsalatiga.ac.id/17725
http://e-repository.perpus.iainsalatiga.ac.id/17407