http://e-repository.perpus.iainsalatiga.ac.id/17930
http://e-repository.perpus.iainsalatiga.ac.id/18792
http://e-repository.perpus.iainsalatiga.ac.id/18147
http://e-repository.perpus.iainsalatiga.ac.id/18888
http://e-repository.perpus.iainsalatiga.ac.id/10797