Não informado. (1993). Groundwater Monitoring and Remendiation. Ground Water Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Groundwater Monitoring and Remendiation. Dublin, Ohio: Ground Water Publishing, 1993.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Groundwater Monitoring and Remendiation. Ground Water Publishing, 1993.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.