APA (7th ed.) Citation

National Council of Teachers of Mathematics & Baumgart, J. K. (1969). Historical topics for the mathematics classroom. NCTM.

Chicago Style (17th ed.) Citation

National Council of Teachers of Mathematics and John K. Baumgart. Historical Topics for the Mathematics Classroom. Washington: NCTM, 1969.

MLA (9th ed.) Citation

National Council of Teachers of Mathematics and John K. Baumgart. Historical Topics for the Mathematics Classroom. NCTM, 1969.

Warning: These citations may not always be 100% accurate.