APA
,, . (2006). Themes in World history : Textbook in history for class XI. New Delhi: N C E R T.
Chicago
,, . 2006. Themes in World history : Textbook in history for class XI. New Delhi: N C E R T.
Harvard
,, . (2006). Themes in World history : Textbook in history for class XI. New Delhi: N C E R T.
MLA
,, . Themes in World history : Textbook in history for class XI. New Delhi: N C E R T. 2006.