Casas, A. (2019). Postulates of the Power and Educational Training in Colombia. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Casas, Alejandro. Postulates of the Power and Educational Training in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2019.
MLA način citiranja (9. izdanje)Casas, Alejandro. Postulates of the Power and Educational Training in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2019.
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