Cate, B. (1972). Ground water pollution. Directory Press.
Lua i Stíl Chicago (17ú heag.)Cate, Bill. Ground Water Pollution. St. Louis, Mo: Directory Press, 1972.
Lua MLA (9ú heag.)Cate, Bill. Ground Water Pollution. Directory Press, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.