Não informado. (1967). Quarterly Journal of Engineering Geology. Geological Society of London.
Lua i Stíl Chicago (17ú heag.)Não informado. Quarterly Journal of Engineering Geology. London: Geological Society of London, 1967.
Lua MLA (8ú heag.)Não informado. Quarterly Journal of Engineering Geology. Geological Society of London, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.