Mulvihill, M., & Smith, i. T. (1990). Barcos Vikings. Edinter.
Lua i Stíl Chicago (17ú heag.)Mulvihill, Margaret, agus il. Tony Smith. Barcos Vikings. Edinter, 1990.
Lua MLA (8ú heag.)Mulvihill, Margaret, agus il. Tony Smith. Barcos Vikings. Edinter, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.