O'Brien, F. A. (2007). Suporting Strategy (x.). John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)O'Brien, Frances A. Suporting Strategy. x. West Susse: John Wiley & Sons, 2007.
Lua MLA (9ú heag.)O'Brien, Frances A. Suporting Strategy. x. John Wiley & Sons, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.