एपीए उद्धरण

Hanley,Nick. (1997). Environmental economics: : in theory and practice. Macmillan.

शिकागो स्टाइल उद्धरण

Hanley,Nick. Environmental Economics: : In Theory and Practice. Chennai: Macmillan, 1997.

एमएलए उद्धरण

Hanley,Nick. Environmental Economics: : In Theory and Practice. Macmillan, 1997.