How do I include metadata information (aperture, shutter speed, ISO and white balance) to each image on contact sheet?
You can set the photo info option to exposure, and that will put the aperture and shutter speed. But I don't know how you would include all the information you want.
Just to expand JimHess reply. This are all the EXIF data you can include on a print. As far as I know, WB is not written to any standard EXIF fields.
Retrieving data ...