http://e-repository.perpus.iainsalatiga.ac.id/15281
http://e-repository.perpus.iainsalatiga.ac.id/14982
http://e-repository.perpus.iainsalatiga.ac.id/14861
http://e-repository.perpus.iainsalatiga.ac.id/13844
http://e-repository.perpus.iainsalatiga.ac.id/15626