APA (7e ed.) Bronvermelding

Valdés Núñez, J. B. (2011). Playful method and mathematics through ITCs to practice entire numbers operations. Universidad Pedagógica y Tecnológica de Colombia.

Chicago (17e ed.) Bronvermelding

Valdés Núñez, Juan Bautista. Playful Method and Mathematics Through ITCs to Practice Entire Numbers Operations. Universidad Pedagógica y Tecnológica de Colombia, 2011.

MLA (9e ed.) Bronvermelding

Valdés Núñez, Juan Bautista. Playful Method and Mathematics Through ITCs to Practice Entire Numbers Operations. Universidad Pedagógica y Tecnológica de Colombia, 2011.