APA

Sharma A. K., . (2007). Power series. : Discovery Publishing House, New Delhi.

Chicago

Sharma A K, . 2007. Power series. : Discovery Publishing House, New Delhi.

Harvard

Sharma A. K., . (2007). Power series. : Discovery Publishing House, New Delhi.

MLA

Sharma A K, . Power series. : Discovery Publishing House, New Delhi. 2007.