Your vehicle has top strap anchors for the rear seating positions. The anchors are located on the filler panel behind the rear seat head restraints. In order to access the anchors, you will have to open the covers.
Do not secure a child restraint with a top strap in the right front passenger's position if a national or local law requires that the top strap be anchored, or if the instructions that come with the child restraint say that the top strap must be anchored. There is no place to anchor the top strap in this position.