Παραπομπή APA

India . Lok Sabha Secretariat. (1989). National energy policy (2nd rev. ed.). Lok Sabha Secretariat.

Παραπομπή Chicago Style

India . Lok Sabha Secretariat. National Energy Policy. 2nd rev. ed. New Delhi: Lok Sabha Secretariat, 1989.

Παραπομπή MLA

India . Lok Sabha Secretariat. National Energy Policy. 2nd rev. ed. Lok Sabha Secretariat, 1989.