Zambrano Leal, A. (2017). Features of the History of a Phenomenon and a Theory. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Zambrano Leal, Armando. Features of the History of a Phenomenon and a Theory. Universidad Pedagógica y Tecnológica de Colombia, 2017.
MLA način citiranja (9. izdanje)Zambrano Leal, Armando. Features of the History of a Phenomenon and a Theory. Universidad Pedagógica y Tecnológica de Colombia, 2017.
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