http://e-repository.perpus.iainsalatiga.ac.id/15975
http://e-repository.perpus.iainsalatiga.ac.id/16288
http://e-repository.perpus.iainsalatiga.ac.id/13275
http://e-repository.perpus.iainsalatiga.ac.id/15197
http://e-repository.perpus.iainsalatiga.ac.id/16138