Não informado. (1965). Rubbers: Rapra abstracts. Rubber and Plastics Research Association of Great Britain.
Chicago-referens (17:e uppl.)Não informado. Rubbers: Rapra Abstracts. Croydon, Inglaterra: Rubber and Plastics Research Association of Great Britain, 1965.
MLA-referens (8:e uppl.)Não informado. Rubbers: Rapra Abstracts. Rubber and Plastics Research Association of Great Britain, 1965.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.