Consult the Library's Writing and Citing resources to learn more about how to use a citation management database to track, build, edit and produce ACS Style references and bibliographies. There are many different and free citation management tools available. A more extensive list may be found here.
Lots of new quick citation management tools including Citation Machine, bibme, APA Referencing Generator, EasyBib don't easily or accurately convert for ACS style, but Citation Machine American Chemical Society works for most requests!
E-books and documents that can help with your writing, documenting and note taking.