Cardona, G. (2003). Practical proposal for the recovery of production and employment from the municipalities localities. Universidad Pedagógica y Tecnológica de Colombia.
Παραπομπή σε μορφή Chicago (17η εκδ.)Cardona, Guillermo. Practical Proposal for the Recovery of Production and Employment from the Municipalities Localities. Universidad Pedagógica y Tecnológica de Colombia, 2003.
Παραπομπή σε μορφή MLA (9th εκδ.)Cardona, Guillermo. Practical Proposal for the Recovery of Production and Employment from the Municipalities Localities. Universidad Pedagógica y Tecnológica de Colombia, 2003.
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