Food and Drug Administration (FDA)

FDA Industry Guidance 

Code of Federal Regulations (CFR)

Good Manufacturing Practice (GMP)

Good Laboratory Practices (GLP)

Good Clinical Practice (GCP)

National Institutes of Health (NIH) 

Clinical Trials (NLM)

European Agency for the Evaluation of Medicinal Products (EMEA)

Japan's Ministry of Health, Labor and Welfare (MHLW) 

Society of Toxicology (SOT)

American College of Toxicology (ACT)

Teratology Society