Shopware. (2002). Basic pipefitting skills. Shopware.
Cita Chicago (17th ed.)Shopware. Basic Pipefitting Skills. Monmouth Junction, NJ: Shopware, 2002.
Cita MLA (8th ed.)Shopware. Basic Pipefitting Skills. Shopware, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.