add to bibliography without citation

I have figures and tables in which the source is included in the figure image. Because of this, I don’t need or want to add a citation to the body of the paper or as a footnote, but I do want to include the source in the bibliography, and I would like to do this within CWYW, if possible. Is this possible? I’m currently using version X2.

If numbered style, you need to insert the citation and then make the text/font “hidden”.  For a Author Year format you can do the same, or select the citation and hide both the author and the year.