Retnaningsih, H.; Setiawan, I. K. O. Annulment of a Preliminary Sales Agreement Due to Formal Defect Through Reconvention: A Case Study of Decision Number 1263 Pdt.G 2023 PN Dps. sjh 2025, 7 (1), 1-17. https://doi.org/10.37276/sjh.v7i1.418.