Acknowledgements

This book could not have been finished without the support of various parties and individuals.

First of all, I would like to express my gratitude to my students. Your active participation and feedback have been the main motivation for me to develop this book. It is my hope that the content presented in this book will satisfy your needs and concerns.

I am deeply grateful to Regina Gong and her team members, who work for Open Educational Resources (OER) at Michigan State University Libraries,​ for their support. I must also thank my colleagues and superordinates at the Department of Linguistics, Languages, and Cultures at MSU for entrusting me with this opportunity. In particular, I wish to thank my supervisor, Danielle Steider, and my mentor, Dr. Rajiv Ranjan, for the advice and suggestions during the preparation of this book.

The book also had the support of my Vietnamese peers, who provided language input as samples and resources. Thank you for your time and effort.

Last but not least, this book is dedicated to my family, especially my father, mother, and brother, who have always been supportive.