Final answer:
Introductory and advanced resources for systematic phylogenetics can be found in 'Phylogeography: the history and formation of species' by Avise for beginners, and 'Bergey's Manual of Systematic Bacteriology' along with more specialized research texts for advanced learners.
Step-by-step explanation:
For an introduction to systematic phylogenetics, which is essential for understanding evolutionary relationships among organisms, I would recommend starting with Avise, J.C. (2000). Phylogeography: the history and formation of species. This book is ideal for those at the beginning stage and will help you grasp the foundational concepts of phylogeography and phylogenetics.
Moving on to more advanced studies, focusing on rigorous data collection and sophisticated analysis, Bergey's Manual of Systematic Bacteriology is an excellent resource for in-depth coverage of bacterial taxonomy and systematics. For practical application, the Manual of Determinative Bacteriology, also from Bergey's, is particularly aimed at identifying bacteria, and will be an especially useful reference for your research project.
Lastly, for those interested in population genetics and evolutionary biology, the advanced texts by Barrett and Schluter on adaptation from standing genetic variation, and by Rissler et al. and Hohenlohe et al. on phylogeography and population genomics, will provide a strong analytical and methodological understanding.