Stoner MM, Lindquist JT. The edgewise appliance today. In: ed. 2. Graber TM editors. Current orthodontic concepts and techniques. vol. 1: Philadelphia: W. B. Saunders Co; 1969; chap. 6
Tweed Charles H. In: Clinical orthodontics. vol. 1: St. Louis: The C. V. Mosby Company; 1966.
Morris M. Stoner, Force control in clinical practice. Am 1 Orthod 1960:46(3), 162-186.