http://e-repository.perpus.iainsalatiga.ac.id/14063
http://e-repository.perpus.iainsalatiga.ac.id/14132
http://e-repository.perpus.iainsalatiga.ac.id/14130
http://e-repository.perpus.iainsalatiga.ac.id/14173
http://e-repository.perpus.iainsalatiga.ac.id/15976