González Marí, J. L., Rico Romero, L., & Gallardo, J. (2012). Structural and semiotic diversity in the didactic transition from the natural-number domain to the integers: A study of understanding in the field of additive relativity. Universidad de Almería.
Chicago-viite (17. p.)González Marí, José L., Luis Rico Romero, ja Jesús Gallardo. Structural and Semiotic Diversity in the Didactic Transition from the Natural-number Domain to the Integers: A Study of Understanding in the Field of Additive Relativity. Universidad de Almería, 2012.
MLA-viite (8. p.)González Marí, José L., et al. Structural and Semiotic Diversity in the Didactic Transition from the Natural-number Domain to the Integers: A Study of Understanding in the Field of Additive Relativity. Universidad de Almería, 2012.