Rolt, L. T. C. (1969). Navigable waterways. Longmans.
Lua i Stíl Chicago (17ú heag.)Rolt, L. T. C. Navigable Waterways. Harlow: Longmans, 1969.
Lua MLA (8ú heag.)Rolt, L. T. C. Navigable Waterways. Longmans, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.