http://e-repository.perpus.iainsalatiga.ac.id/14305
http://e-repository.perpus.iainsalatiga.ac.id/13025
http://e-repository.perpus.iainsalatiga.ac.id/16391
http://e-repository.perpus.iainsalatiga.ac.id/17381
http://e-repository.perpus.iainsalatiga.ac.id/17140