Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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

Atenció: Aquestes cites poden no estar 100% correctes.