Febrihadi Suparidho and Yuni Ristanti 2026. The Validity of the Binding Sale and Purchase Agreement (PPJB) in the presence of a Notary related to the incomplete basis of land rights. International Journal of Health, Economics, and Social Sciences (IJHESS). 8, 1 (Jan. 2026), 241~245. DOI:https://doi.org/10.56338/ijhess.v8i1.9972.