http://e-repository.perpus.iainsalatiga.ac.id/16273
http://e-repository.perpus.iainsalatiga.ac.id/13437
http://e-repository.perpus.iainsalatiga.ac.id/9948
http://e-repository.perpus.iainsalatiga.ac.id/17684
http://e-repository.perpus.iainsalatiga.ac.id/17359