HAYDEN CATHERINE L. (1986). HANDBOOK OF STRATEGIC EXPERTISE. FREE PRESS.
Lua i Stíl Chicago (17ú heag.)HAYDEN CATHERINE L. HANDBOOK OF STRATEGIC EXPERTISE. NEW YORK: FREE PRESS, 1986.
Lua MLA (9ú heag.)HAYDEN CATHERINE L. HANDBOOK OF STRATEGIC EXPERTISE. FREE PRESS, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.