http://e-repository.perpus.iainsalatiga.ac.id/12131
http://e-repository.perpus.iainsalatiga.ac.id/12144
http://e-repository.perpus.iainsalatiga.ac.id/12025
http://e-repository.perpus.iainsalatiga.ac.id/9020
http://e-repository.perpus.iainsalatiga.ac.id/8843