Não informado. (1965). Rubbers: Rapra abstracts. Rubber and Plastics Research Association of Great Britain.
Lua i Stíl Chicago (17ú heag.)Não informado. Rubbers: Rapra Abstracts. Croydon, Inglaterra: Rubber and Plastics Research Association of Great Britain, 1965.
Lua MLA (8ú heag.)Não informado. Rubbers: Rapra Abstracts. Rubber and Plastics Research Association of Great Britain, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.