American Psychological Association (APA)
OPM. (n.d.). United States Patent and Trademark Office Glossary. Retrieved June 6, 2023, from website: http://www.expertglossary.com/definition/opm.
Chicago Manual of Style (CMS)
OPM. www.uspto.gov. United States Patent and Trademark Office Glossary. USPTO. http://www.expertglossary.com/definition/opm (accessed: June 6, 2023).
Modern Language Association (MLA)
"OPM." United States Patent and Trademark Office Glossary. USPTO. 6 June. 2023 http://www.expertglossary.com/definition/opm.