LIEBOWITZ JAY. (2006). STRATEGIC INTELLIGENCE: BUSINESS INTELLIGENCE, COMPWTITIVE ? AUERBACH PUBLICATION.
Lua i Stíl Chicago (17ú heag.)LIEBOWITZ JAY. STRATEGIC INTELLIGENCE: BUSINESS INTELLIGENCE, COMPWTITIVE ? BOCA RATON: AUERBACH PUBLICATION, 2006.
Lua MLA (9ú heag.)LIEBOWITZ JAY. STRATEGIC INTELLIGENCE: BUSINESS INTELLIGENCE, COMPWTITIVE ? AUERBACH PUBLICATION, 2006.
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