ASTM Subcommittee D18.21 on Ground Water Monitoring, American Society for Testing Materials, Nielsen, D., & Johnson, A. I. (1990). Ground water and vadose zone monitoring. ASTM.
Chicago Style (17th ed.) CitationASTM Subcommittee D18.21 on Ground Water Monitoring, American Society for Testing Materials, David Nielsen, and A. I. Johnson. Ground Water and Vadose Zone Monitoring. Philadelphia, PA: ASTM, 1990.
MLA (9th ed.) CitationASTM Subcommittee D18.21 on Ground Water Monitoring, et al. Ground Water and Vadose Zone Monitoring. ASTM, 1990.
Warning: These citations may not always be 100% accurate.