http://e-repository.perpus.iainsalatiga.ac.id/16434
http://e-repository.perpus.iainsalatiga.ac.id/17663
http://e-repository.perpus.iainsalatiga.ac.id/17336
http://e-repository.perpus.iainsalatiga.ac.id/17589
http://e-repository.perpus.iainsalatiga.ac.id/18647