APA引文

Henry, M., Clarke, D., & Vignos, J. (2001). US patent no. 6,311,136 B1: Digital flowmeter. United States Patent and Trademark Office.

芝加哥风格引文

Henry, M., D. Clarke, 与 J. Vignos. US Patent No. 6,311,136 B1: Digital Flowmeter. United States Patent and Trademark Office, 2001.

MLA引文

Henry, M., et al. US Patent No. 6,311,136 B1: Digital Flowmeter. United States Patent and Trademark Office, 2001.