Paül i Agustí, Daniel. “Davies, John I Kent, Alexander J. (2017). The Red Atlas: How the Soviet Union Secretly Mapped the World”. Documents d’Anàlisi Geogràfica 65, no. 2 (May 29, 2019): 427–429. Accessed January 18, 2025. https://dag.revista.uab.cat/article/view/v65-n2-paul2.