Não informado. (1969). World surface coatings abstracts. Paint Research Association.
Lua i Stíl Chicago (17ú heag.)Não informado. World Surface Coatings Abstracts. London: Paint Research Association, 1969.
Lua MLA (8ú heag.)Não informado. World Surface Coatings Abstracts. Paint Research Association, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.