APA

Burke K., Hopkins A. & Potter J. (2008). Mysteries of the unexplained. England, UK: Penguin readers Plc.

Chicago

Burke Kathy, Hopkins Andy and Potter Jocelyn. 2008. Mysteries of the unexplained. England, UK: Penguin readers Plc.

Harvard

Burke K., Hopkins A. and Potter J. (2008). Mysteries of the unexplained. England, UK: Penguin readers Plc.

MLA

Burke Kathy, Hopkins Andy and Potter Jocelyn. Mysteries of the unexplained. England, UK: Penguin readers Plc. 2008.