Παραπομπή APA

Soni, P. (1996). Energy and environmental challenges in central Asia and the caucasus. Tata Energy Research Institute.

Παραπομπή Chicago Style

Soni, Preeti. Energy and Environmental Challenges in Central Asia and the Caucasus. New Delhi: Tata Energy Research Institute, 1996.

Παραπομπή MLA

Soni, Preeti. Energy and Environmental Challenges in Central Asia and the Caucasus. Tata Energy Research Institute, 1996.