Miller, G. T. (1991). Environmental science sustaining the earth (3rd ed.). Wadsworth.
Lua i Stíl Chicago (17ú heag.)Miller, G. Tyler. Environmental Science Sustaining the Earth. 3rd ed. Belmont: Wadsworth, 1991.
Lua MLA (9ú heag.)Miller, G. Tyler. Environmental Science Sustaining the Earth. 3rd ed. Wadsworth, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.