Stefan Grzybowski, System prawa cywilnego. Część ogólna [Système de droit civil. Partie générale], Wrocław 1974, Ossolineum, 722 pages. Contemporary Central & East European Law, [S. l.], n. 1 (37), p. 51–53, 1978. Disponível em: https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1397. Acesso em: 6 oct. 2025.