Derham, D. P. E., Paton, G. W. E., & Paton, G. W. (1972). A textbook of jurisprudence (Ed.4.).

Derham, David P; Ed, G W; Ed Paton, and George Whitecross Paton. A Textbook of Jurisprudence. Ed.4. Oxford, Clarendon Press, 1972.

Derham, David P; Ed, et al. A Textbook of Jurisprudence. Ed.4. 1972.