Kirkaldy, A. W. (1970). British shipping: Its history, organisation and importance. David & Charles.
Lua i Stíl Chicago (17ú heag.)Kirkaldy, Adam W. British Shipping: Its History, Organisation and Importance. Newton Abbot: David & Charles, 1970.
Lua MLA (8ú heag.)Kirkaldy, Adam W. British Shipping: Its History, Organisation and Importance. David & Charles, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.