http://e-repository.perpus.iainsalatiga.ac.id/15943
http://e-repository.perpus.iainsalatiga.ac.id/11870
http://e-repository.perpus.iainsalatiga.ac.id/11229
http://e-repository.perpus.iainsalatiga.ac.id/11993
http://e-repository.perpus.iainsalatiga.ac.id/14770