Vallejo Zamudio, L. E. (2015). The fall in oil prices and its impact on the Colombian economy. Universidad Pedagógica y Tecnológica de Colombia.
Citazione stile Chigago Style (17a edizione)Vallejo Zamudio, Luis E. The Fall in Oil Prices and Its Impact on the Colombian Economy. Universidad Pedagógica y Tecnológica de Colombia, 2015.
Citatione MLA (9a ed.)Vallejo Zamudio, Luis E. The Fall in Oil Prices and Its Impact on the Colombian Economy. Universidad Pedagógica y Tecnológica de Colombia, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.