Cita APA (7a ed.)

British Standards Institution. (2001). BS EN 13906-2:2002: Cylindrical helical springs made from round wire and bar-Calculation and design- Parte 2: Extension springs. European Comittee for standardization.

Cita Chicago Style (17a ed.)

British Standards Institution. BS EN 13906-2:2002: Cylindrical Helical Springs Made from Round Wire and Bar-Calculation and Design- Parte 2: Extension Springs. Bruselas: European Comittee for standardization, 2001.

Cita MLA (9a ed.)

British Standards Institution. BS EN 13906-2:2002: Cylindrical Helical Springs Made from Round Wire and Bar-Calculation and Design- Parte 2: Extension Springs. European Comittee for standardization, 2001.