Cita APA (7a ed.)

Henry, M., & Clarke, D. (2006). US patent no. 7,136,761 B2: Digital flowmeter. United States Patent and Trademark Office.

Cita Chicago Style (17a ed.)

Henry, M., y D. Clarke. US Patent No. 7,136,761 B2: Digital Flowmeter. United States Patent and Trademark Office, 2006.

Cita MLA (9a ed.)

Henry, M., y D. Clarke. US Patent No. 7,136,761 B2: Digital Flowmeter. United States Patent and Trademark Office, 2006.