Roser LA, Clawsen DK, Football Injuries in the Very Young Athletes: Clin. Ortho. Rel. Res., 69: 219-223, Mar-Apr., 1970.
2.
The 1970 Intercollegiate Tackle Football Injury Surveillance Report, prepared for The Joint Commission on Competitive Safeguards and Medical Aspects of Sports; Gary L. Martin and Samuel I. Fuenning, University Health Center; Donald F. Costella and Jose Inguanzo, University Computing Center, University of Nebraska.
3.
Stauss MB (Editor), Familiar Medical Quotations. Little, Brown and Co., 1968.
