References
- Sheets NL: Current status of certification of coaches in Maryland. JOPER 42:11, June 1971
- Esslinger AA: Certification of high school coaches. JOPER 39:42–45, October 1968
- Meinhardt T: A rationale for certification of high school coaches in Illinois. JOPER 42:48–55, January 1971
- McKinney WC: Certification of coaches: the Missouri approach. JOPER 41:50–51, October 1970