Slides 12-16 contain instructions on how to export multiple citations to RefWorks.
Reference management systems
Organize your documents, collect and cite sources, and create bibliographies in a variety of citation styles. The Bloomsburg University Library supports two research management systems, RefWorks and EndNote Online. For this class, you'll be using RefWorks.
Academic disciplines often use the citation style of their 'core' journals. Chemists use the style of the American Chemical Society journals, but generally speaking, you should use the citation style required by your professor.