APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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