Jorge Carrillo, Óscar Contreras and Miguel Ángel Ramírez, 1982, "Trade unionism and labor relations: Examination of mining, maquiladora and automotive trade unionism", in Covarrubias and Solís (coord.), Trade unionism, Labor Relations and Free Trade, El Colegio de Sonora, pp. 111-123
Source: Jorge Carrillo, Óscar Contreras and Miguel Ángel Ramírez, 1982, "Trade unionism and labor relations: Examination of mining, maquiladora and automotive trade unionism", in Covarrubias and Solís (coord.), Trade unionism, Labor Relations and Free Trade, El Colegio de Sonora, pp. 111-123
