Não informado. (1981). Ground Water Monitoring Review. Water Well Journal Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Ground Water Monitoring Review. Worthington, Ohio: Water Well Journal Publishing, 1981.
Lua MLA (8ú heag.)Não informado. Ground Water Monitoring Review. Water Well Journal Publishing, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.