This research examines change agents' and opinion leaders' perceptions of CD-ROMs, online databases, and print sources in the academic library environment. The change agents and opinion leaders are librarians who advocate and influence the purchase decisions regarding computerized information systems. From a survey of librarians' perceived advantages of CD-ROM, online, and print sources and a comparison of the findings to the literature, it is evident that CD-ROM surpasses both online and print sources in terms of cost, ease of use, speed, convenience, compatibility, and testability. CD-ROM may possibly be the most adopted information system in libraries for the future. (Contains 17 references.) (Author)