APA (7th ed.) Citation

National Association of Secondary School Principals (U.S.) & Keefe, J. W. (1979). Competency tests and graduation requirements (2nd ed.). National Association of Secondary School Principals.

Chicago Style (17th ed.) Citation

National Association of Secondary School Principals (U.S.) and James W. Keefe. Competency Tests and Graduation Requirements. 2nd ed. Reston, Va.: National Association of Secondary School Principals, 1979.

MLA (9th ed.) Citation

National Association of Secondary School Principals (U.S.) and James W. Keefe. Competency Tests and Graduation Requirements. 2nd ed. National Association of Secondary School Principals, 1979.