Ramsay, W. (1972). Managing the environment: An economic primer. Basic Books, Publishers.
Lua i Stíl Chicago (17ú heag.)Ramsay, William. Managing the Environment: An Economic Primer. New York: Basic Books, Publishers, 1972.
Lua MLA (9ú heag.)Ramsay, William. Managing the Environment: An Economic Primer. Basic Books, Publishers, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.