1. Admissions Testing Program of the College Board. National college-bound seniors, 1981. Princeton, NJ: ATP, 1981, p.14.
2. American College Testing Program. ACT class profile of 1975-76 freshman. Iowa City, IA: ACTP, 1976.
3. Predicting academic performance in college. New York: The Free Press, 1971.
4. Brown University. Men and women learning together: A study of college students in the late 70's. Providence, RI: Brown University, 1980.
5. Biology Education in Secondary Schools of the United States