Llewellyn, K. N., & Schauer, F. F. (2011). The theory of rules. The University of Chicago Press.
Chicago Style (17th ed.) CitationLlewellyn, Karl N., and Frederick F. Schauer. The Theory of Rules. Chicago: The University of Chicago Press, 2011.
MLA (9th ed.) CitationLlewellyn, Karl N., and Frederick F. Schauer. The Theory of Rules. The University of Chicago Press, 2011.
Warning: These citations may not always be 100% accurate.