Saldarriaga Vélez, Ó. (2010). Assessment of the construction of social knowledge. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Saldarriaga Vélez, Óscar. Assessment of the Construction of Social Knowledge. Universidad Pedagógica y Tecnológica de Colombia, 2010.
MLA način citiranja (9. izdanje)Saldarriaga Vélez, Óscar. Assessment of the Construction of Social Knowledge. Universidad Pedagógica y Tecnológica de Colombia, 2010.
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