If you don't want to use RefWorks, try one of these other citation management options. These are free, but you may have to create an account to use them.
Be aware that these free sources may not necessarily include the particular citation style you need.
NOTE! RefWorks will format *most* of your bibliography or list of references in your chosen Output Style. However, ALWAYS double-check the accuracy of the citations in your bibliography, since RefWorks does NOT: