1. Bellomo, Manlio. “The common legal past of Europe 1000-1800”, The Catholic University of America Press Washington.
2. Glenn.H.Patrick. “Legal History of the World’, Oxford, 2007.
3. Graziano, Thomas Kadner. “Comparative Contract Law” cases, materials and exercises, published 2009 by Palgrave Macmillan, D.C.
4. Nicholas, Barry. “The French Law of Contract”, Clarendon Press Oxford, 1992.
5. Vranken, Martin. “Fundamentals of European Civil Law’, Federation press, 2010.