They do not have screw holes for mounting against a wall. These are also huge for bookshelf speakers, so you should probably look into stands instead of mounting them. Also, there is a bass port on the back side.
like the other person said they are heavy with no mounting options other than a stand. i did do a wall mount with my 3 ways in the rear, but what i did was to use 2 nails about 2 inches long and leave about 1/4 inch exposed then grabbed up some mechanics wire to make my hanger, and working great