American Psychological Association (APA)
SFFAC. (n.d.). United States Patent and Trademark Office Glossary. Retrieved February 5, 2023, from website: http://www.expertglossary.com/definition/sffac.
Chicago Manual of Style (CMS)
SFFAC. www.uspto.gov. United States Patent and Trademark Office Glossary. USPTO. http://www.expertglossary.com/definition/sffac (accessed: February 5, 2023).
Modern Language Association (MLA)
"SFFAC." United States Patent and Trademark Office Glossary. USPTO. 5 February. 2023 http://www.expertglossary.com/definition/sffac.