Library databases allow you to export your citations to RefWorks. While each database vendor is different, all provide an option to identify or mark items that are of interest, and then export your citations to RefWorks.
You can create folders in RefWorks. This means you can create different folders for different projects, or different folders for varied aspects of a particular project. The same item can exist simultaneously in more than one folder.
If you think that you've lost a reference, check the folder called, Not in folder. This is where references go if they have been imported but not put into a folder.
When ready to create your list of References: