APA引文

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

芝加哥风格引文

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

MLA引文

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

警告：这些引文格式不一定是100％准确.