APA

Subudhi R N,, . (1993). Energy options for 21st century. New Delhi: Ashish Publishing House.

Chicago

Subudhi R N,, . 1993. Energy options for 21st century. New Delhi: Ashish Publishing House.

Harvard

Subudhi R N,, . (1993). Energy options for 21st century. New Delhi: Ashish Publishing House.

MLA

Subudhi R N,, . Energy options for 21st century. New Delhi: Ashish Publishing House. 1993.