WAGHORN TERRY. (2002). SYSTEM: STORY OF INTRIGUE AND MARKET DOMINATION. PERSEUS PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)WAGHORN TERRY. SYSTEM: STORY OF INTRIGUE AND MARKET DOMINATION. CAMBRIDGE: PERSEUS PUBLICATIONS, 2002.
Lua MLA (9ú heag.)WAGHORN TERRY. SYSTEM: STORY OF INTRIGUE AND MARKET DOMINATION. PERSEUS PUBLICATIONS, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.