Παραπομπή APA

Subudhi, R. (1993). Energy options for 21st century. Ashish.

Παραπομπή Chicago Style

Subudhi, R.N. Energy Options for 21st Century. New Delhi: Ashish, 1993.

Παραπομπή MLA

Subudhi, R.N. Energy Options for 21st Century. Ashish, 1993.