Which of the following sources is commonly used for drug identification?

The Drug Identification Bible is a well-known reference used by professionals in fields such as law enforcement and pharmacy for identifying various drugs and their formulations. This source provides comprehensive information on the physical characteristics, chemical compositions, and legal classifications of drugs, making it an invaluable tool for accurately identifying substances encountered in various contexts, particularly in legal and investigative processes.

In contrast, the other choices do not focus specifically on drug identification. The Textbook of Biology typically covers broader biological concepts and principles rather than details concerning specific drugs. The Traffic Safety Manual concentrates on issues related to traffic laws and safety practices, with little to no emphasis on drug identification. The Criminal Justice Journal may contain research and articles on drugs in relation to crime, but it is not specifically a dedicated resource for drug identification. Thus, the Drug Identification Bible stands out as the most appropriate and reliable source for this purpose.