(en) Daniel Covarrubias, « Analyzing how a Social Base Impacts Economic Development and Competitiveness Strategies in a Cross-border Context: the Case of Region Laredo », Journal of Borderlands Studies, vol. 33, no 3, , p. 351–370 (ISSN0886-5655 et 2159-1229, DOI10.1080/08865655.2016.1270168, lire en ligne, consulté le )
(en) Daniel Covarrubias, « Analyzing how a Social Base Impacts Economic Development and Competitiveness Strategies in a Cross-border Context: the Case of Region Laredo », Journal of Borderlands Studies, vol. 33, no 3, , p. 351–370 (ISSN0886-5655 et 2159-1229, DOI10.1080/08865655.2016.1270168, lire en ligne, consulté le )
(en) Daniel Covarrubias, « Analyzing how a Social Base Impacts Economic Development and Competitiveness Strategies in a Cross-border Context: the Case of Region Laredo », Journal of Borderlands Studies, vol. 33, no 3, , p. 351–370 (ISSN0886-5655 et 2159-1229, DOI10.1080/08865655.2016.1270168, lire en ligne, consulté le )