Não informado. (1970). Geodex Retrieval System for Geotechnical Abstracts. Geodex International.
Lua i Stíl Chicago (17ú heag.)Não informado. Geodex Retrieval System for Geotechnical Abstracts. Sonoma, Calif: Geodex International, 1970.
Lua MLA (8ú heag.)Não informado. Geodex Retrieval System for Geotechnical Abstracts. Geodex International, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.