http://e-repository.perpus.iainsalatiga.ac.id/17505
http://e-repository.perpus.iainsalatiga.ac.id/17335
http://e-repository.perpus.iainsalatiga.ac.id/17737
http://e-repository.perpus.iainsalatiga.ac.id/17701
http://e-repository.perpus.iainsalatiga.ac.id/19260