Bernal Escobar, I. (2013). teaching and learning philosophy in the daily interaction singularity. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Bernal Escobar, Isabel. Teaching and Learning Philosophy in the Daily Interaction Singularity. Universidad Pedagógica y Tecnológica de Colombia, 2013.
MLA način citiranja (9. izdanje)Bernal Escobar, Isabel. Teaching and Learning Philosophy in the Daily Interaction Singularity. Universidad Pedagógica y Tecnológica de Colombia, 2013.
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