Cumming, J. (1947). Literature of the life-boat, 1785-1947 (Rev. Aufl.). Royal National Life-Boat Institution.
Lua i Stíl Chicago (17ú heag.)Cumming, John. Literature of the Life-boat, 1785-1947. Rev. Aufl. London: Royal National Life-Boat Institution, 1947.
Lua MLA (8ú heag.)Cumming, John. Literature of the Life-boat, 1785-1947. Rev. Aufl. Royal National Life-Boat Institution, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.