@misc{indiciae5e3635c2da7c,
  title = {A workbook for preparing a district quality- assurance plan for water-quality activities},
  author = {Terry L. Schertz and Carolyn J.O. Childress and Valerie J. Kelly and Michelle S. Boucher and Gary L. Pederson},
  year = {1998},
  doi = {10.3133/ofr9898},
  url = {https://pubs.usgs.gov/publication/ofr9898},
  note = {Source identifier: ofr9898}
}