APA (7th ed.) Citation

(2023). Guide to the international patent classification (2023 edition.). World Intellectual Property Organization.

Chicago Style (17th ed.) Citation

Guide to the International Patent Classification. 2023 edition. Geneva, Switzerland: World Intellectual Property Organization, 2023.

MLA (9th ed.) Citation

Guide to the International Patent Classification. 2023 edition. World Intellectual Property Organization, 2023.

Warning: These citations may not always be 100% accurate.