Akibat hukum pembayaran oleh pihak ketiga dalam kasus wanprestasi perjanjian pemborongan (aannmening van werk): studi kasus putusan Mahkamah Agung nomor 871/k/pdt/2014 = Legal consequences for the payment made by third party in the breach of chartering agreement (aanneming van werk): case study of supreme court decision no 871 k pdt 2014