Currently, there is a known problem with exporting citations directly from various ProQuest databases to RefWorks. This is being worked on, and we hope for a resolution soon. The problem seems to occur more often on campus and less often to off-campus folks working via EZproxy.
In the meanwhile, there are a couple work-arounds for exporting citations. If you need a work-around, please contact the RefWorks Help Group here in the Library at : email@example.com