APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：這些引文格式不一定是100％准確.