Valdés Núñez, J. B. (2011). Playful method and mathematics through ITCs to practice entire numbers operations. Universidad Pedagógica y Tecnológica de Colombia.
Cita Chicago (17th ed.)Valdés Núñez, Juan Bautista. Playful Method and Mathematics Through ITCs to Practice Entire Numbers Operations. Universidad Pedagógica y Tecnológica de Colombia, 2011.
Cita MLA (9th ed.)Valdés Núñez, Juan Bautista. Playful Method and Mathematics Through ITCs to Practice Entire Numbers Operations. Universidad Pedagógica y Tecnológica de Colombia, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.