Dyfyniad APA

Sigg, O. (1997). Political Switzerland. Zurich, Switzerland: Pro Helvetia.

Dyfyniad Arddull Chicago

Sigg, Oswald. Political Switzerland. Zurich, Switzerland: Pro Helvetia, 1997.

Dyfyniad MLA

Sigg, Oswald. Political Switzerland. Zurich, Switzerland: Pro Helvetia, 1997.

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