Rojas Barreto, L. (2011). Towards the Development of Bilingualism in the Colombian Context. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Rojas Barreto, Lisseth. Towards the Development of Bilingualism in the Colombian Context. Universidad Pedagógica y Tecnológica de Colombia, 2011.
MLA način citiranja (9. izdanje)Rojas Barreto, Lisseth. Towards the Development of Bilingualism in the Colombian Context. Universidad Pedagógica y Tecnológica de Colombia, 2011.
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