1. América Economía. 2014. Ranking: las 500 mayores empresas de Chile 2014.
http://rankings.americaeconomia.com/las-500-mayores-empresas-de-chile-2014/ranking-500-chile_1_50/
. Accessed 5 November 2015.
2. Bucheli, Marcelo. 2010a. Major Trends in the Historiography of the Latin American Oil Industry. Business History Review 84 (2): 339–362.
3. Bucheli, Marcelo. 2010b. Multinational Corporations, Business Groups, and Economic Nationalism: Standard Oil (New Jersey), Royal Dutch-Shell, and Energy Politics in Chile, 1913–2005. Enterprise and Society 11 (2): 350–399.
4. Burbach, Roger. 1975. The Chilean Industrial Bourgeoisie and Foreign Capital, 1920–1970. Unpublished PhD thesis, Indiana University, Bloomington.
5. Chile: Instituto Nacional de Estadísticas (several years). Anuario Estadístico. Santiago: Imprenta Nacional.