http://e-repository.perpus.iainsalatiga.ac.id/13867
http://e-repository.perpus.iainsalatiga.ac.id/13881
http://e-repository.perpus.iainsalatiga.ac.id/14225
http://e-repository.perpus.iainsalatiga.ac.id/14687
http://e-repository.perpus.iainsalatiga.ac.id/14681