Barbosa-Saucedo, É. A., Gracia-Villar, S., & Dzul-López, L. A. (2011). How to improve business competitiveness in Tamaulipas?: Six Sigma, an alternative for small and medium enterprises. Universidad Autónoma de Tamaulipas.
Lua i Stíl Chicago (17ú heag.)Barbosa-Saucedo, Édgar Alejandro, Santos Gracia-Villar, agus Luis Alonso Dzul-López. How to Improve Business Competitiveness in Tamaulipas?: Six Sigma, an Alternative for Small and Medium Enterprises. Universidad Autónoma de Tamaulipas, 2011.
Lua MLA (8ú heag.)Barbosa-Saucedo, Édgar Alejandro, et al. How to Improve Business Competitiveness in Tamaulipas?: Six Sigma, an Alternative for Small and Medium Enterprises. Universidad Autónoma de Tamaulipas, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
