Fuld, L. M. (2006). The Secrete Language of Competitive Intelligence. Crown Business.
Cita Chicago (17th ed.)Fuld, Leonard M. The Secrete Language of Competitive Intelligence. Crown Business, 2006.
Cita MLA (9th ed.)Fuld, Leonard M. The Secrete Language of Competitive Intelligence. Crown Business, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.