APA (7th ed.) Citation

National Council of Teachers of Mathematics. (1973). Instructional aids in mathematics.

Chicago Style (17th ed.) Citation

National Council of Teachers of Mathematics. Instructional Aids in Mathematics. [Washington], 1973.

MLA (9th ed.) Citation

National Council of Teachers of Mathematics. Instructional Aids in Mathematics. 1973.

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