APA (7th ed.) Citation

Unesco & Library of Congress. National Library Service for the Blind and Physically Handicapped. (1990). World braille usage ([Rev. ed.].). UNESCO ; National Library Service for the Blind and Physically Handicapped, Library of Congress.

Chicago Style (17th ed.) Citation

Unesco and Library of Congress. National Library Service for the Blind and Physically Handicapped. World Braille Usage. [Rev. ed.]. Paris, France : Washington, D.C.: UNESCO ; National Library Service for the Blind and Physically Handicapped, Library of Congress, 1990.

MLA (9th ed.) Citation

Unesco and Library of Congress. National Library Service for the Blind and Physically Handicapped. World Braille Usage. [Rev. ed.]. UNESCO ; National Library Service for the Blind and Physically Handicapped, Library of Congress, 1990.