APA
Crystal D., . (2005). The Penguin pocket dictionary of quotations. London: Penguin Books Ltd.
Chicago
Crystal David, . 2005. The Penguin pocket dictionary of quotations. London: Penguin Books Ltd.
Harvard
Crystal D., . (2005). The Penguin pocket dictionary of quotations. London: Penguin Books Ltd.
MLA
Crystal David, . The Penguin pocket dictionary of quotations. London: Penguin Books Ltd. 2005.