Harris, J. M. (2006). Environmental and natural resource economics: A contemporary approach (2nd ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Harris, Jonathan M. Environmental and Natural Resource Economics: A Contemporary Approach. 2nd ed. Boston: Houghton Mifflin, 2006.
Lua MLA (9ú heag.)Harris, Jonathan M. Environmental and Natural Resource Economics: A Contemporary Approach. 2nd ed. Houghton Mifflin, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.