APA
Hughes David, Jewell Tim, . (1996). Environmental law. London: Butterworths.
Chicago
Hughes David, Jewell Tim, . 1996. Environmental law. London: Butterworths.
Harvard
Hughes David, Jewell Tim, . (1996). Environmental law. London: Butterworths.
MLA
Hughes David, Jewell Tim, . Environmental law. London: Butterworths. 1996.