Hidalgo Tobar, Américo Francisco. “The Challenges of Regional Shipping in the Face of the Global Economy”. Revista Centroamericana de Administración Pública, no. 32-33 (December 20, 1997): 13–28. Accessed May 20, 2024. https://ojs.icap.ac.cr/index.php/RCAP/article/view/498.