Não informado. (1977). Marine Policy. IPC Business Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Marine Policy. Surrey, Inglaterra: IPC Business Press, 1977.
Lua MLA (8ú heag.)Não informado. Marine Policy. IPC Business Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.