APA引文

Mueller, W. (2015). The revolutions of 1989. Internationale Geschichte 2.

Chicago Style Citation

Mueller, Wolfgang. "The Revolutions of 1989." Internationale Geschichte 2 2015.

MLA引文

Mueller, Wolfgang. "The Revolutions of 1989." Internationale Geschichte 2 2015.

警告：這些引文格式不一定是100％准確.