With greater organizational complexities looming on the horizon, PMI has introduced Navigating Complexity: A Practice Guide. The definitive guide expands upon the principles, tools, and techniques presented in the PMBOK® Guide and other foundational standards, providing a streamlined approach to understanding and navigating complexity. This groundbreaking guide fills a void, providing the first published reference to help project management professionals successfully mitigate complexities and accomplish their organizational goals.
It's great: actionable, to the point, with useful tables and typical scenarios. Maybe a bit outdated (after all it was published over 10 years ago). Also, bibliography in the appendix is proving really useful to expand my knowledge on the subject. Recommended.