Updated to reflect the latest trends and the newest sources commonly used for reference work, this new edition includes more detailed discussion of a wider range of reference-related services, including interlibrary loan, document delivery, and readers' advisory services. There is also increased attention to ethical issues and a stronger focus on user-centered services, both face-to-face and mediated by technology. In addition, the authors discuss Web sites of significant value and the impact of the Internet on reference services. Copyright © Libri GmbH. All rights reserved.