Bonell, M. J. (2005). An international restatement of contract law: The UNIDROIT principles of international commercial contracts (3rd ed.). Transnational Publishers.
Lua i Stíl Chicago (17ú heag.)Bonell, Michael Joachim. An International Restatement of Contract Law: The UNIDROIT Principles of International Commercial Contracts. 3rd ed. Ardsley, N.Y.: Transnational Publishers, 2005.
Lua MLA (9ú heag.)Bonell, Michael Joachim. An International Restatement of Contract Law: The UNIDROIT Principles of International Commercial Contracts. 3rd ed. Transnational Publishers, 2005.
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