World Intellectual Property Organization (Geneva, Switzerland). (2021). PCT yearly review 2021 - executive summary: The international patent system. World Intellectual Property Organization.
Chicago Style (17th ed.) CitationWorld Intellectual Property Organization (Geneva, Switzerland). PCT Yearly Review 2021 - Executive Summary: The International Patent System. Geneva: World Intellectual Property Organization, 2021.
MLA (9th ed.) CitationWorld Intellectual Property Organization (Geneva, Switzerland). PCT Yearly Review 2021 - Executive Summary: The International Patent System. World Intellectual Property Organization, 2021.
Warning: These citations may not always be 100% accurate.