http://e-repository.perpus.iainsalatiga.ac.id/12771
http://e-repository.perpus.iainsalatiga.ac.id/12977
http://e-repository.perpus.iainsalatiga.ac.id/13409
http://e-repository.perpus.iainsalatiga.ac.id/13222
http://e-repository.perpus.iainsalatiga.ac.id/13499