Double check any citations that are automatically made for you! They often have small mistakes.
RefWorks is a software that lets you manage your PDF's and generates citations as you write.
You can access the application here. Use the "Use login from my institution" option if you're setting up a new account.
You can download the Citation Plug-in (which lets you insert citations as you write and will automatically generate a bibliography when you're done) from the "Tools" menu within your new RefWorks account.