Current, popular magazines (including Business Week, Fortune and Money) in an easy to browse online format.
Backward Citation Tracking: Looking at an article's works cited list provides a snapshot of the research that was available at the time of publication and will provide you with a wealth of related sources.
Forward Citation Tracking: Looking to see if a source has been cited by others will help you determine its importance and will identify other, more current sources. Look for "times cited" or "cited by" in tools such as ABI Inform and Google Scholar.