APA
European Tyre and Rim Technical Organisation, ETRTO, . (1991). Engineering design information 1991. Bryssel: European Tyre and Rim Technical Organisation.
Chicago
European Tyre and Rim Technical Organisation, ETRTO, . 1991. Engineering design information 1991. Bryssel: European Tyre and Rim Technical Organisation.
Harvard
European Tyre and Rim Technical Organisation, ETRTO, . (1991). Engineering design information 1991. Bryssel: European Tyre and Rim Technical Organisation.
MLA
European Tyre and Rim Technical Organisation, ETRTO, . Engineering design information 1991. Bryssel: European Tyre and Rim Technical Organisation. 1991.