http://e-repository.perpus.iainsalatiga.ac.id/10584
http://e-repository.perpus.iainsalatiga.ac.id/10591
http://e-repository.perpus.iainsalatiga.ac.id/10233
http://e-repository.perpus.iainsalatiga.ac.id/10323
http://e-repository.perpus.iainsalatiga.ac.id/11049
c.1 olah