Book excerpt: This book is a very practical and accessible book that offers a comprehensive overview of research methodology in applied linguistics by describing the various stages of qualitative ang quantitative investigations, from collecting the data to reporting the results. The writers provide a thorough discussion and various range of methodological issues by looking at numerous areas both in Qualitative and Quantitative areas in depth. Comprehensive and accessible, this book is essential guide to research methods for undergraduate and postgraduate students majoring in language, education, and apllied linguistics.