APA
Allen C., . (2008). Practical guide to evidence. London: Cavendish Publishing.
Chicago
Allen Christopher, . 2008. Practical guide to evidence. London: Cavendish Publishing.
Harvard
Allen C., . (2008). Practical guide to evidence. London: Cavendish Publishing.
MLA
Allen Christopher, . Practical guide to evidence. London: Cavendish Publishing. 2008.