RefWorks is a bibliographic management tool. In other words, you can use it to gather, store and manage your references, and to automatically generate a list of references/bibliography.
Many online catalogues and databases allow you to push records straight into Refworks. You can do this in Library Search from within the e-shelf. You can then create a list of references in a range of different referencing formats with a few clicks...
The lists generated are not perfect - they will contain errors that you need to correct - but they provide a good starting point.
If you are interested in finding out more, check out the 'Learn to use Refworks in 20 minutes' video playlist on the Refworks YouTube Channel.
If Refworks seems like too much trouble, have a look at EasyBib. As well as the website, EasyBib have produced apps for IPhone, Android and Google mobiles, which will generate a reference when you scan in the barcode of a book.
Resources
EasyBib
Learn to use Refworks in 20 minutes [video playlist]
Refworks and Endnote [University of Westminster page]
Refworks - Help
Refworks YouTube Channel