APA (7th ed.) Citation

(1991). Unesco: IBE education thesaurus (5th ed.--1990 : rev. and enl.). Unesco.

Chicago Style (17th ed.) Citation

Unesco: IBE Education Thesaurus. 5th ed.--1990 : rev. and enl. Paris: Unesco, 1991.

MLA (9th ed.) Citation

Unesco: IBE Education Thesaurus. 5th ed.--1990 : rev. and enl. Unesco, 1991.