Ibbetson, D. (2001). A Historical Introduction to the Law of Obligations. Oxford University Press.
Čikaški stil citiranja (17. izdanje)Ibbetson, David. A Historical Introduction to the Law of Obligations. Oxford, Great Britain: Oxford University Press, 2001.
MLA način citiranja (9. izdanje)Ibbetson, David. A Historical Introduction to the Law of Obligations. Oxford University Press, 2001.
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