Coyle, G. (2004). Practical strategy. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Coyle, Geoff. Practical Strategy. Prentice Hall, 2004.
Lua MLA (8ú heag.)Coyle, Geoff. Practical Strategy. Prentice Hall, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.