1. American Association for the Advancement of Science, and the National Association of State Directors of Teacher Education and Certification Guidelines and Standards for the Education of Secondary School Teachers of Science and Mathematics
2. ambridge onference eport Goals for School Mathematics 1963
3. Let's Teach Probability;Campbell;Colorado Mathematics Teaching Journal,1966
4. ommission athematics eport Program for College Preparatory Mathematics 1959
5. CUPM. Recommendations on Course Content for the Training of Teachers of Mathematics August, 1971