Fuld, L. M. (2006). The Secrete Language of Competitive Intelligence. Crown Business.
Čikaški stil citiranja (17. izdanje)Fuld, Leonard M. The Secrete Language of Competitive Intelligence. Crown Business, 2006.
MLA način citiranja (9. izdanje)Fuld, Leonard M. The Secrete Language of Competitive Intelligence. Crown Business, 2006.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.