Tinjauan yuridis keberlakuan kitab undang-undang hukum perdata dan undang-undang nomor 40 tahun 2007 tentang perseroan terbatas dalam eksekusi gadai saham melalui penjualan secara tertutup (studi kasus: putusan MA RI No. 2875/K/PDT/2008) = Analysis on enforceability of Indonesian civil code and law number 40 of 2007 concerning limited liability companies in the execution of pledge of shares through private selling (case study: supreme court decision No. 2875 K/PDT/2008)