European Medicines Agency (EMEA): http://www.emea.europa.eu

European Pharmacopeia (EP): http://www.pheur.org

Food and Drug Administration (FDA): http://www.fda.gov
 
Parenteral Drug Association (PDA):
www.pda.org
 
American Society for Microbiology:
www.asm.org
 
International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH): www.ich.org
 
Vectech Pharmaceutical Consultants, Inc.:
www.vectech.com 
 
Pharmaceutical Microbiology Forum:
www.microbiologyforum.org
 
Compendial Learning Wiki:
www.compendiallearingwiki.wetpaint.com