RefWorks 

Comparison of other Reference Management Softwares.

Create bibliographies in MLA, APA, Chicago, or Turabian styles only. Create a bib. using auto-fill or manual options. Register and login to save your bibliographies.

Registration required. Supports MLA, APA, Chicago, Turabian, and CSE only.

Registration required. Supports multiple citation styles.

MLA only. Type and go! Login optional.

Works with Firefox only. Download extension from Zotero website. Supports hundreds of different citation styles.