"Online! provides citation styles for the total range of online information: World Wide Web site, Email message, Web discussion forum posting, Listserv message, Newsgroup message, Real-time communication, Telnet, FTP, and gopher sites. Detailed descriptions and examples of each are given for MLA, APA, Chicago, and CBE. The guide is helpful in defining distinctions between citing the whole site versus citing one page or part of a site, and citing personal versus professional sites. The various types of web publications are clearly explained. This site would be most useful for students of all ages working on papers that involve the vast and varied elements of the online environment"--"Best Free Reference Web Sites 2001." RUSA Quarterly, Fall 2001; reviewed Apr. 2, 2001.