Dyfyniad APA

Unesco. (1973). Guidelines for the establishment and development of monolingual thesauri. The Organization.

Dyfyniad Arddull Chicago

Unesco. Guidelines for the Establishment and Development of Monolingual Thesauri. Paris: The Organization, 1973.

Dyfyniad MLA

Unesco. Guidelines for the Establishment and Development of Monolingual Thesauri. The Organization, 1973.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.