APA (7th ed.) Citation

World Intellectual Property Organization (Geneva, Switzerland). (2005). Official catchword index: To the eighth edition (2006) of the International Patent Classification ([8th ed.].). WIPO.

Chicago Style (17th ed.) Citation

World Intellectual Property Organization (Geneva, Switzerland). Official Catchword Index: To the Eighth Edition (2006) of the International Patent Classification. [8th ed.]. Geneva: WIPO, 2005.

MLA (9th ed.) Citation

World Intellectual Property Organization (Geneva, Switzerland). Official Catchword Index: To the Eighth Edition (2006) of the International Patent Classification. [8th ed.]. WIPO, 2005.