APA (7th ed.) Citation

World Intellectual Property Organization. (1981). Patent information and documentation handbook. World Intellectual Property Organization.

Chicago Style (17th ed.) Citation

World Intellectual Property Organization. Patent Information and Documentation Handbook. Geneva: World Intellectual Property Organization, 1981.

MLA (9th ed.) Citation

World Intellectual Property Organization. Patent Information and Documentation Handbook. World Intellectual Property Organization, 1981.