Palacio, J. F. (2010). Reseña de "THE NEXT 100 YEARS: A FORECAST FOR THE 21ST CENTURY" de George Friedman. Universidad Externado de Colombia.
Citazione stile Chigago Style (17a edizione)Palacio, Juan Fernando. Reseña De "THE NEXT 100 YEARS: A FORECAST FOR THE 21ST CENTURY" De George Friedman. Universidad Externado de Colombia, 2010.
Citatione MLA (9a ed.)Palacio, Juan Fernando. Reseña De "THE NEXT 100 YEARS: A FORECAST FOR THE 21ST CENTURY" De George Friedman. Universidad Externado de Colombia, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.