11. Control of nitrosamine impurities in human drugs Publication: Silver Spring, MD : Center for Drug Evaluation and Research, February 2021 Subject(s): Drug Contamination -- prevention & controlNitrosaminesUnited StatesUnited States. Department of Health and Human Services.United States. Food and Drug Administration.
12. FDA oversight Author(s): White, Robert S, author Publication: [Toronto, Ontario] : Thomson Reuters, 20-December-2021 Subject(s): Drug ApprovalDrug TherapyDrugs, InvestigationalGovernment RegulationIllicit DrugsUnited StatesUnited States. Food and Drug Administration.