https://warta26.my.id/the-existence-and-constraint-of-marriage-registration-for-the-followers-of-sapta-darma-belief-in-east-lampung-oleh-habib-shulton-asnawi-agus-setiawan-iwannudin/
The Existence and Constraint of Marriage Registration for the Followers of Sapta Darma Belief in East Lampung (Oleh :Habib Shulton Asnawi, Agus Setiawan, Iwannudin )