APA (7th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. (1968). Números racionales. Trillas.

Chicago Style (17th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. Números Racionales. Ciudad de México: Trillas, 1968.

MLA (9th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. Números Racionales. Trillas, 1968.

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