"Thinking in Systems" is a significant non-fiction book written by Donella Meadows that addresses the complexity of systems in various contexts. Published in 2015, the book offers an in-depth analysis and insights into how systems operate, which are relevant in many fields, including the environment, economy, and society. With a hardcover and a length of 240 pages, it is suitable for both professionals and those interested in developing a better understanding of systemic thinking. The English-language publication covers topics relevant to lexicons, reference works, and encyclopedias. Weighing 300 grams and with compact dimensions of 15 cm in height and 22.6 cm in width, the book is convenient and easy to transport. "Thinking in Systems" is an essential work for anyone looking to understand and apply the dynamics of complex systems.