(2)The ability to locate and review previous research Students are enabled to use three major sources of related literature,and they are background sources,original sources,and critical sources.They are enabled to read opinion articles,review articles and research reports,and to search for information through reference books, library catalogues,abstract and index service,computer database,online service, and conference proceedings(2) The ability to locate and review previous research ◼ Students are enabled to use three major sources of related literature, and they are background sources, original sources, and critical sources. They are enabled to read opinion articles, review articles and research reports, and to search for information through reference books, library catalogues, abstract and index service, computer database, online service, and conference proceedings