Não informado. (1994). Research Trends in Plastics Technology. Research Information.
Lua i Stíl Chicago (17ú heag.)Não informado. Research Trends in Plastics Technology. Hemel Hempstead, Inglaterra: Research Information, 1994.
Lua MLA (8ú heag.)Não informado. Research Trends in Plastics Technology. Research Information, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.