Dyfyniad APA

Urdang international. (2020). Urdang international Summer Schools. Theurdang international.

Dyfyniad Arddull Chicago

Urdang international. Urdang International Summer Schools. London: Theurdang international, 2020.

Dyfyniad MLA

Urdang international. Urdang International Summer Schools. Theurdang international, 2020.

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