WAGHORN TERRY. (2002). SYSTEM: STORY OF INTRIGUE AND MARKET DOMINATION. PERSEUS PUBLICATIONS.
Čikaški stil citiranja (17. izdanje)WAGHORN TERRY. SYSTEM: STORY OF INTRIGUE AND MARKET DOMINATION. CAMBRIDGE: PERSEUS PUBLICATIONS, 2002.
MLA način citiranja (9. izdanje)WAGHORN TERRY. SYSTEM: STORY OF INTRIGUE AND MARKET DOMINATION. PERSEUS PUBLICATIONS, 2002.
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