Gómez-Suárez, Andrei (2021). Christian Gerlach y Clemens Six, ed. The Palgrave Handbook of Anti-Communist Persecutions(en inglés). Cham (Suiza): Springer Nature. p. 384. ISBN978-3-030-54962-6. Consultado el 1 de mayo de 2021 en GoogleBooks. «In August 2018 [...] Iván Duque of the right party Centro Democrático (CD) took office in Colombia».
Susan Abad/Nicholas Casey (27 de mayo de 2018). «In Colombia, Far-Right and Hard-Left Candidates Will Vie for Presidency». The New York Times(en inglés). «The two candidates of Colombia’s far-right and left wing parties came out ahead in a first-round vote on Sunday to choose the country’s next leader. [...] Iván Duque, 41, a conservative former senator, won about 39 percent of the vote, election officials said Sunday night. Gustavo Petro, 58, a former leftist rebel who rose to become mayor of Bogotá, the capital, won about 25 percent.»
