http://e-repository.perpus.iainsalatiga.ac.id/12276
http://e-repository.perpus.iainsalatiga.ac.id/17342
http://e-repository.perpus.iainsalatiga.ac.id/17460
http://e-repository.perpus.iainsalatiga.ac.id/17140
http://e-repository.perpus.iainsalatiga.ac.id/17523