1. Guide to Inspections of Validation of Cleaning Processes;FDA,1993
2. Reference Material for FDA Investigators and Personnel;Guide to Inspections of Validation of Cleaning Processes,1993
3. Cleaning Validation Guidelines—Good Manufacturing Practice,2004
4. Guidance on Aspects of Cleaning Validation in Active Pharmaceutical Ingredient Plants;Active Pharmaceutical Ingredient Committee,2000
5. Capillary gas chromatographic assay of residual methenamine hippurate in equipment cleaning validation swabs