Não informado. (1970). Annual book of ASTM standards. American Society for Testing and Materials.
Lua i Stíl Chicago (17ú heag.)Não informado. Annual Book of ASTM Standards. Philadelphia, Pa: American Society for Testing and Materials, 1970.
Lua MLA (8ú heag.)Não informado. Annual Book of ASTM Standards. American Society for Testing and Materials, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.