एपीए उद्धरण

Singh, N. (1976). Economics and the crisis of ecology. Oxford University Press.

शिकागो स्टाइल उद्धरण

Singh, Narindar. Economics and the Crisis of Ecology. Delhi: Oxford University Press, 1976.

एमएलए उद्धरण

Singh, Narindar. Economics and the Crisis of Ecology. Oxford University Press, 1976.