Designed to complement every introductory library reference course, this is the perfect text for students and librarians looking to expand their personal reference knowledge, teaching failsafe methods for identifying important materials by matching specific types of questions to the best available sources, regardless of format. Guided by a national advisory board of educators and practitioners including Eileen Abels, Anita Ondrusek, Marie L. Radford, and Steven Tash, this text expertly keeps up with new technologies and practices while remaining grounded in the basics of reference work. Chapters on fundamental concepts, major reference sources, and special topics in reference provide a solid foundation, plus fresh insight on new issues, includingNew chapters on ethics, readers advisory, and reference services for children and young adultsWebsite development and maintenanceRSS feedsSocial networkingDelivering reference services across multiple platformsAs librarians experience a changing climate for all information services professionals, Cassell and Hiremath provide the tools needed to manage the ebb and flow of changing reference services in the 21st century.