http://e-repository.perpus.iainsalatiga.ac.id/12035
http://e-repository.perpus.iainsalatiga.ac.id/12108
http://e-repository.perpus.iainsalatiga.ac.id/12539
http://e-repository.perpus.iainsalatiga.ac.id/12910
http://e-repository.perpus.iainsalatiga.ac.id/12819