APA Citation

National Council of Teachers of Mathematics, & National Council of Teachers of Mathematics. (1970). El sistema de los números racionales. México: Trillas.

Chicago Style Citation

National Council of Teachers of Mathematics, and National Council of Teachers of Mathematics. El Sistema De Los Números Racionales. México: Trillas, 1970.

MLA Citation

National Council of Teachers of Mathematics, and National Council of Teachers of Mathematics. El Sistema De Los Números Racionales. México: Trillas, 1970.

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