http://e-repository.perpus.iainsalatiga.ac.id/9186
http://e-repository.perpus.iainsalatiga.ac.id/9231
http://e-repository.perpus.iainsalatiga.ac.id/9556
http://e-repository.perpus.iainsalatiga.ac.id/9828
http://e-repository.perpus.iainsalatiga.ac.id/10984