Toscano, O. M. (2014). The 1935 tax reform and the strengthening of direct taxation in Colombia. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Toscano, Oliver Mora. The 1935 Tax Reform and the Strengthening of Direct Taxation in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2014.
MLA način citiranja (9. izdanje)Toscano, Oliver Mora. The 1935 Tax Reform and the Strengthening of Direct Taxation in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2014.
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