Each volume in the Classic Edition Sources series brings together selections of enduring intellectual value—classic articles, book excerpts, and research studies—that have shaped a discipline of study. Edited for length and level, the selections are organized topically around the major areas of study within the discipline. Selected World Wide Web sites are included, and an annotated table of contents provides a quick and easy review of the selections. Every Classic Edition Sources volume is supported by an online Instructor’s Resource Guide that provides a complete synopsis of each selection, guidelines for discussing the selection in class, and testing materials. For more information, visit the Classic Edition Sources series website (www.mhhe.com/classicedition).