http://e-repository.perpus.iainsalatiga.ac.id/18908
http://e-repository.perpus.iainsalatiga.ac.id/17987
http://e-repository.perpus.iainsalatiga.ac.id/19903
http://e-repository.perpus.iainsalatiga.ac.id/20000
http://e-repository.perpus.iainsalatiga.ac.id/18895