http://e-repository.perpus.iainsalatiga.ac.id/19480
http://e-repository.perpus.iainsalatiga.ac.id/18490
http://e-repository.perpus.iainsalatiga.ac.id/19353
http://e-repository.perpus.iainsalatiga.ac.id/20060
http://e-repository.perpus.iainsalatiga.ac.id/20057