Cowan, P. C. (1913). The improvement of the main roads of Ireland.
Lua i Stíl Chicago (17ú heag.)Cowan, P. C. The Improvement of the Main Roads of Ireland. 1913.
Lua MLA (9ú heag.)Cowan, P. C. The Improvement of the Main Roads of Ireland. 1913.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
