Não informado. (1974). International Polymer Science and Technology. Rubber and Plastics Research Association of Great Britain.
Lua i Stíl Chicago (17ú heag.)Não informado. International Polymer Science and Technology. Shrewsbury, Inglaterra: Rubber and Plastics Research Association of Great Britain, 1974.
Lua MLA (8ú heag.)Não informado. International Polymer Science and Technology. Rubber and Plastics Research Association of Great Britain, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.