APA

,, . (2006). Fundamentals of physical geography : Textbook for class XI. New Delhi: N C E R T.

Chicago

,, . 2006. Fundamentals of physical geography : Textbook for class XI. New Delhi: N C E R T.

Harvard

,, . (2006). Fundamentals of physical geography : Textbook for class XI. New Delhi: N C E R T.

MLA

,, . Fundamentals of physical geography : Textbook for class XI. New Delhi: N C E R T. 2006.