एपीए उद्धरण

Hjalte,Krister, & Lidgren,Karl. (1977). Environmental policy and welfare economics. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Hjalte,Krister, और Lidgren,Karl. Environmental Policy and Welfare Economics. Cambridge: Cambridge University Press, 1977.

एमएलए उद्धरण

Hjalte,Krister, और Lidgren,Karl. Environmental Policy and Welfare Economics. Cambridge University Press, 1977.