We would like to express our appreciation to all the people who have provided assistance and guidance to the development of this book. We want to thank Scott Isenberg and Charlene Kronstedt from Business Expert Press who made this revision possible. We would like to thank the companies that have contributed to our research and students in our programs for sharing their knowledge and experiences with us. Specifically, we would like to thank Dr. Phil Carter, CAPS Research, and the Institute for Supply Management, for their generous support of a grant to further support our study of commodity price volatility. We especially would like to thank Melanie Kulesz and Donna Greif for all their assistance in the formatting and organizing of this book.