1. Physician's Desk Reference;Charles Bak-er,1982
2. Remington's Pharmaceutical Science, l6th edition;Osol,1980
3. The U.S. Pharmacopeia, 20th edition,1980
4. The U.S. Pharmacopeia, 20th edition,1981
5. Pentazocine.1 Strong Analgesics and Analgesic Antagonists in the Benzomorphan Series2