García Castillo, H. Y. (2012). The way of looking at brings forth new ways of thinking. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)García Castillo, Hasly Yanneth. The Way of Looking at Brings Forth New Ways of Thinking. Universidad Pedagógica y Tecnológica de Colombia, 2012.
MLA način citiranja (9. izdanje)García Castillo, Hasly Yanneth. The Way of Looking at Brings Forth New Ways of Thinking. Universidad Pedagógica y Tecnológica de Colombia, 2012.
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