APA (7th ed.) Citation

Shopware & Duffy, J. E. (2006). Engine top-end construction. Shopware.

Chicago Style (17th ed.) Citation

Shopware and James E. Duffy. Engine Top-end Construction. Lawrenceville, NJ: Shopware, 2006.

MLA (8th ed.) Citation

Shopware and James E. Duffy. Engine Top-end Construction. Shopware, 2006.

Warning: These citations may not always be 100% accurate.