John Henry Merryman and Rogelio Pérez-Perdomo, The Civil Law Tradition: An Introduction to the Legal Systems of Europe and Latin America, 3rd ed. (Stanford: Stanford University Press, 2007), pp. 9–11Arxivləşdirilib 2022-01-23 at the Wayback Machine.
John Henry Merryman and Rogelio Pérez-Perdomo, The Civil Law Tradition: An Introduction to the Legal Systems of Europe and Latin America, 3rd ed. (Stanford: Stanford University Press, 2007), pp. 9–11Arxivləşdirilib 2022-01-23 at the Wayback Machine.