Articles chop up your topic into little, narrow questions. If you find 5 articles, each presenting a narrow study, it's often hard to see how they fit together and what question they are all trying to answer. But encyclopedias and handbooks
Use associations to find out about conferences and hot issues in your field (i.e., topics for your papers).
Annual Reviews have great overviews, long literature reviews, on general topics in many areas of interest to you: sociology, psychology, organizational management, and more.
Want to find overviews on a particular topic? Here's my blog post on searching in Annual Reviews.