McKinney, M. L., & Schoch, R. M. (1998). Environmental science: Systems and solutions (Web enhanced edition.). Jones and Bartlett.
Lua i Stíl Chicago (17ú heag.)McKinney, Michael L., agus Robert M. Schoch. Environmental Science: Systems and Solutions. Web enhanced edition. Sudbury, Massachusetts: Jones and Bartlett, 1998.
Lua MLA (9ú heag.)McKinney, Michael L., agus Robert M. Schoch. Environmental Science: Systems and Solutions. Web enhanced edition. Jones and Bartlett, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.