Espinosa Romero, C. I., & Jiménez Espinosa, A. (2014). Construction of the concept of ratio and constant ratio from the social epistemological viewpoint. Universidad Pedagógica y Tecnológica de Colombia.
Παραπομπή σε μορφή Chicago (17η εκδ.)Espinosa Romero, César Iván, και Alfonso Jiménez Espinosa. Construction of the Concept of Ratio and Constant Ratio from the Social Epistemological Viewpoint. Universidad Pedagógica y Tecnológica de Colombia, 2014.
Παραπομπή σε μορφή MLA (9th εκδ.)Espinosa Romero, César Iván, και Alfonso Jiménez Espinosa. Construction of the Concept of Ratio and Constant Ratio from the Social Epistemological Viewpoint. Universidad Pedagógica y Tecnológica de Colombia, 2014.
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