I. M. S. Robbins, « FILMS: KNOWING TO LEARN, THE CHANGEOVER, SUMMERHILL, LEARNING BY DOING, MOVING 1S LEARNING, KINDERGARTEN, NO REA50N TO STAY, A SEARCH FOR LEARNING, IF THESE WERE YOUR CHILDREN », MJE / RSEM, vol. 4, nᵒ 002, août 1969.