एपीए उद्धरण

Pal,S P. (1985). Long term demand for iron and steel. NCAER.

शिकागो स्टाइल उद्धरण

Pal,S P. Long Term Demand for Iron and Steel. New Delhi: NCAER, 1985.

एमएलए उद्धरण

Pal,S P. Long Term Demand for Iron and Steel. NCAER, 1985.