The book Pengantar Metodologi untuk Ilmu-Ilmu Empiris by Jacob Vredenbregt, published by Gramedia in Jakarta, is an introductory academic work that focuses on the foundations of methodological thinking in empirical sciences, explaining how knowledge is systematically constructed through observation, data collection, and logical analysis. It discusses the basic structure of scientific research, including problem formulation, hypothesis development, methods of gathering and interpreting data, and drawing conclusions based on evidence. The work also addresses key methodological concerns such as the distinction between qualitative and quantitative approaches, and the criteria used to assess scientific rigor, including validity and reliability. It is situated in the context of social science education and is typically used as a foundational text for students who are beginning to learn how empirical research is designed and conducted in disciplines such as sociology and anthropology.