Miller, G. T. (1999). Environmental science: Working with the Earth (7th ed.). Wadsworth Publishing Company.
Lua i Stíl Chicago (17ú heag.)Miller, G. Tyler. Environmental Science: Working with the Earth. 7th ed. Belmont, Calif.: Wadsworth Publishing Company, 1999.
Lua MLA (8ú heag.)Miller, G. Tyler. Environmental Science: Working with the Earth. 7th ed. Wadsworth Publishing Company, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.