1. Hills , D. M. C. Moritz 1990 Molecular Systematics Although this useful book emphasizes the systematics of eucaryotic organisms, many of the techniques are directly applicable to bacteria
2. Stackbrandt , E. M. Goodfellow 1991 Nucleic Acid Techniques in Bacterial Systematics John Wiley & Sons Ltd Chichester, England Provides an extensive range of molecular methods for studying bacterial classification by the techniques of molecular biology