http://e-repository.perpus.iainsalatiga.ac.id/18215
http://e-repository.perpus.iainsalatiga.ac.id/18256
http://e-repository.perpus.iainsalatiga.ac.id/18382
http://e-repository.perpus.iainsalatiga.ac.id/18412
http://e-repository.perpus.iainsalatiga.ac.id/8584
http://e-repository.perpus.uinsalatiga.ac.id/17885/