एपीए उद्धरण

(1981). Kothari's economic and industrial guide of India 1980-'81. Kothari & Sons.

शिकागो स्टाइल उद्धरण

Kothari's Economic and Industrial Guide of India 1980-'81. Madras: Kothari & Sons, 1981.

एमएलए उद्धरण

Kothari's Economic and Industrial Guide of India 1980-'81. Kothari & Sons, 1981.