Cita APA (7a ed.)

Ibbetson, D. J. (1999). A Historical introduction to the law of obligations. Oxford University Press.

Cita Chicago Style (17a ed.)

Ibbetson, D. J. A Historical Introduction to the Law of Obligations. Oxford: Oxford University Press, 1999.

Cita MLA (9a ed.)

Ibbetson, D. J. A Historical Introduction to the Law of Obligations. Oxford University Press, 1999.