Dyfyniad APA

(1994). Locarno agreement establishing an international classification for industrial design signed at London on October 8, 1968. WIPO.

Dyfyniad Arddull Chicago

Locarno Agreement Establishing an International Classification for Industrial Design Signed at London on October 8, 1968. Geneva: WIPO, 1994.

Dyfyniad MLA

Locarno Agreement Establishing an International Classification for Industrial Design Signed at London on October 8, 1968. WIPO, 1994.

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