http://e-repository.perpus.iainsalatiga.ac.id/17447
http://e-repository.perpus.iainsalatiga.ac.id/17327
http://e-repository.perpus.iainsalatiga.ac.id/17941
http://e-repository.perpus.iainsalatiga.ac.id/18416
http://e-repository.perpus.iainsalatiga.ac.id/19607