United States. National Technical Information Service. (1974). NTIS master frequency list of subject terms, July 1969 - December 1972. National Technical Information Service.
Lua i Stíl Chicago (17ú heag.)United States. National Technical Information Service. NTIS Master Frequency List of Subject Terms, July 1969 - December 1972. Springfield, Ill.: National Technical Information Service, 1974.
Lua MLA (8ú heag.)United States. National Technical Information Service. NTIS Master Frequency List of Subject Terms, July 1969 - December 1972. National Technical Information Service, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.