APA (7th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. (1970). El sistema de los enteros. Trillas.

Chicago Style (17th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. El Sistema De Los Enteros. Ciudad de México: Trillas, 1970.

MLA (9th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. El Sistema De Los Enteros. Trillas, 1970.

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