Sánchez Hernández, C. (2011). Competitive intelligence. Universidad Complutense de Madrid.
Lua i Stíl Chicago (17ú heag.)Sánchez Hernández, Carlos. Competitive Intelligence. Madrid: Universidad Complutense de Madrid, 2011.
Lua MLA (9ú heag.)Sánchez Hernández, Carlos. Competitive Intelligence. Universidad Complutense de Madrid, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.