Mc Kinney m.L. (1998). Environmental science. jones and Bartlett.
Lua i Stíl Chicago (17ú heag.)Mc Kinney m.L. Environmental Science. Boston: jones and Bartlett, 1998.
Lua MLA (9ú heag.)Mc Kinney m.L. Environmental Science. jones and Bartlett, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.