Branch, A. E. (1981). Elements of shipping/Alan E. Branch. Chapman And Hall.
Lua i Stíl Chicago (17ú heag.)Branch, Alan E. Elements of Shipping/Alan E. Branch. Chapman And Hall, 1981.
Lua MLA (8ú heag.)Branch, Alan E. Elements of Shipping/Alan E. Branch. Chapman And Hall, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.