oleh k2
http://e-repository.perpus.iainsalatiga.ac.id/7776/
http://e-repository.perpus.iainsalatiga.ac.id/8120/
http://e-repository.perpus.iainsalatiga.ac.id/8507
http://e-repository.perpus.iainsalatiga.ac.id/8547
http://e-repository.perpus.iainsalatiga.ac.id/8395
http://e-repository.perpus.iainsalatiga.ac.id/8533