Cratty, B.1971. Active learning: games to enhance academic abilities. Englewood Cliffs, New Jersey: Prentice-Hall.
2.
Gutin, B.1973. Effect of a short treadmill run to exhaustion on performance of long addition. Cited by B. R. Gearheart, Learning disabilities: educational strategies. St. Louis: C. V. Mosby .
3.
Hopkins, L.J., and Hopkins, J.T.Yoga in psychomotor training. Academic Therapy11:4 pp. 461-465.
4.
Mann, L., et al. 1973. A comparison of three methods of physical education programming for emotionally disturbed children. Final report. Project no. 482717, Grant no. OEG-0-70-3557 (607). Office of Education , Washington, D.C.