APA (7e ed.) Bronvermelding

Shopware. (2002). Basic pipefitting skills. Shopware.

Chicago (17e ed.) Bronvermelding

Shopware. Basic Pipefitting Skills. Monmouth Junction, NJ: Shopware, 2002.

MLA (8e ed.) Bronvermelding

Shopware. Basic Pipefitting Skills. Shopware, 2002.