Díaz Bernal, J. G. (2012). Historical analysis on information and knowledge society. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Díaz Bernal, Juan Guillermo. Historical Analysis on Information and Knowledge Society. Universidad Pedagógica y Tecnológica de Colombia, 2012.
MLA način citiranja (9. izdanje)Díaz Bernal, Juan Guillermo. Historical Analysis on Information and Knowledge Society. Universidad Pedagógica y Tecnológica de Colombia, 2012.
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