Dyfyniad APA

(2001). Summaries of conventions, treaties and agreements adminstered by WIPO, October 2001. WIPO.

Dyfyniad Arddull Chicago

Summaries of Conventions, Treaties and Agreements Adminstered by WIPO, October 2001. Geneva: WIPO, 2001.

Dyfyniad MLA

Summaries of Conventions, Treaties and Agreements Adminstered by WIPO, October 2001. WIPO, 2001.

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