http://e-repository.perpus.iainsalatiga.ac.id/11603
http://e-repository.perpus.iainsalatiga.ac.id/8790
http://e-repository.perpus.iainsalatiga.ac.id/8176
http://e-repository.perpus.iainsalatiga.ac.id/9089
http://e-repository.perpus.iainsalatiga.ac.id/8416