Não informado. (1993). Groundwater Monitoring and Remendiation. Ground Water Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Groundwater Monitoring and Remendiation. Dublin, Ohio: Ground Water Publishing, 1993.
Lua MLA (8ú heag.)Não informado. Groundwater Monitoring and Remendiation. Ground Water Publishing, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.