Analisis buy back guarantee sebagai jaminan pelunasan utang dalam pemberian fasilitas kredit pemilikan rumah: studi kasus pada jual beli rumah secara inden antara PT. X, Y, dan Bank Z = Analysis on buy back guarantee as loan guarantee of home ownership credit: case study on sale and purchase of indent house between PT. X, Y, and Bank Z / Syadhillah Anzana Hazairin