Referencing management software

EndNote

EndNote is a comprehensive referencing application that integrates well with Microsoft Word when writing essays, journal articles and theses

Mendeley

A free application and academic social network service with up to 2 GB of storage for PDF files, that can be used to collect, organise, share and cite references.

Zotero

A free, Open Source application with up to 300 MB of storage for PDF files, images etc., that can be used to collect, organise and cite references.