http://e-repository.perpus.iainsalatiga.ac.id/17053
http://e-repository.perpus.iainsalatiga.ac.id/17792
http://e-repository.perpus.iainsalatiga.ac.id/10250
http://e-repository.perpus.iainsalatiga.ac.id/10308
http://e-repository.perpus.iainsalatiga.ac.id/11235