The book "Sources of modern private law" by D. In. Erofeeva is a deep and comprehensive study that immerses the reader in the complex world of legal norms governing private relations in modern society. This publication will be of particular interest to lawyers, law students, as well as anyone interested in law and its impact on everyday life. In his work, Yerofeev analyzes various sources of private law, including laws, judicial precedents, international agreements and customs. The author seeks to show how these sources interact with each other, forming a legal system that meets the requirements of the time. It raises important questions about how private law adapts to changes in society, and what challenges it faces in the context of globalization and digitalization. The book is written in accessible language, which makes it suitable for a wide audience. Students studying law will find in it useful materials for preparing for exams and writing term papers. Practitioners will be able to use it as a guide that will help to understand current issues of private law. In addition, the book will be interesting to those who just want to better understand how the legal system works and what mechanisms are behind the protection of private interests. The topics raised in the book are very relevant. Yerofeev addresses issues such as consumer protection, intellectual property, contractual relations and liability of the parties. He focuses on how changes in legislation and public consciousness affect private law, and how this, in turn, affects the lives of ordinary citizens. The reader will be able to see how legal norms are applied in practice, and how they can protect or, conversely, infringe on the rights of people. Erofeev's style is distinguished by clarity and logical presentation. He skillfully combines theoretical aspects with practical examples, which makes the material more clear and understandable. The author is not afraid to raise difficult questions and offer non-standard solutions, which makes his work especially valuable for those who are looking for new approaches to the study of law. Among other well-known works of Yerofeev are his works on civil law and legal systems, which also deserve attention. The book “Sources of Modern Private Law” is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of law and understand how legal norms affect our lives. It will be an excellent addition to the library of any lawyer, student or simply interested in human rights. If you are looking for information about private law, its sources and current issues, this book is your reliable guide to the world of legal norms and practices. Do not miss the opportunity to expand your horizons and learn more about how private law works in modern society. “Sources of modern private law” is the key to understanding the complex legal mechanisms that affect us every day.