When viewing a reference with electronic access to partial or full text, you can access it from the Reference Details. This may be access to the text within the library or on an external site, or the uploaded file.

When viewing a list of references in full view, select the text link (if available) to view the text.

For some references, such as uploaded PDF files and HTML pages, full view of the reference is provided directly in RefWorks. The RefWorks reader enables you to download the document, and for PDF files, it enables you to highlight text passages, and add comments and notes.
Full Instructions: https://knowledge.exlibrisgroup.com/RefWorks/Product_Documentation/RefWorks_User_Guide/0400_Managing_References#Accessing_Full_Text_from_RefWorks