Lua APA (7ú heag.)

Field, B. C. (1997). Environmental economics: An introduction (2nd ed.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Field, Barry C. Environmental Economics: An Introduction. 2nd ed. New York: McGraw-Hill, 1997.

Lua MLA (8ú heag.)

Field, Barry C. Environmental Economics: An Introduction. 2nd ed. McGraw-Hill, 1997.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.