(1981). Kothari's economic and industrial guide of India 1980-'81. Kothari & Sons.
Chicago Style aipamenaKothari's Economic and Industrial Guide of India 1980-'81. Madras: Kothari & Sons, 1981.
MLA aipamenaKothari's Economic and Industrial Guide of India 1980-'81. Kothari & Sons, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.