APA

Ashworth Andrew,, . (2009). Principles of criminal law. London: Oxford University Press.

Chicago

Ashworth Andrew,, . 2009. Principles of criminal law. London: Oxford University Press.

Harvard

Ashworth Andrew,, . (2009). Principles of criminal law. London: Oxford University Press.

MLA

Ashworth Andrew,, . Principles of criminal law. London: Oxford University Press. 2009.