Não informado. (1993). Groundwater Monitoring and Remendiation. Ground Water Publishing.
Chicago-referens (17:e uppl.)Não informado. Groundwater Monitoring and Remendiation. Dublin, Ohio: Ground Water Publishing, 1993.
MLA-referens (8:e uppl.)Não informado. Groundwater Monitoring and Remendiation. Ground Water Publishing, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.