http://e-repository.perpus.iainsalatiga.ac.id/18564
http://e-repository.perpus.iainsalatiga.ac.id/18991
http://e-repository.perpus.iainsalatiga.ac.id/19226
http://e-repository.perpus.iainsalatiga.ac.id/19125
http://e-repository.perpus.iainsalatiga.ac.id/19327