Cita APA

Green, N., Hartley, T. C., & Usher, J. A. (1991). The legal foundations of the single European market. Oxford University Press.

Citación estilo Chicago

Green, Nicholas, Trevor C. Hartley, and John A. Usher. The Legal Foundations of the Single European Market. Oxford: Oxford University Press, 1991.

Cita MLA

Green, Nicholas, et al. The Legal Foundations of the Single European Market. Oxford University Press, 1991.