http://e-repository.perpus.iainsalatiga.ac.id/14240
http://e-repository.perpus.iainsalatiga.ac.id/15168
http://e-repository.perpus.iainsalatiga.ac.id/15379
http://e-repository.perpus.iainsalatiga.ac.id/16055
http://e-repository.perpus.iainsalatiga.ac.id/17528