File Attachments > Attach File > select file > press the Open button.Ģ.press the Attach File button within the Summary tab on the right panel, then select file and press the Open button.In your EndNote Desktop library, select (click) the reference you would like to attach the PDF to, then: This method is useful when you already have the PDF of a reference saved on your computer or USB, or for references that do not have a DOI (please see METHOD B below for more details). This method is carried out for one reference at a time, not multiple reference simultaneously.ġ. METHOD A: Manually attach a PDF to an existing reference Purpose You can add full-text PDFs to existing references in your EndNote Desktop library using either one of the two options below.