APA引文

Eckardt, F., Ruiz Sanchez, J., & Eckardt, F. (2015). City of crisis. Bielefeld.

Chicago Style Citation

Eckardt, Frank, Javier Ruiz Sanchez, and Frank Eckardt. City of Crisis. Bielefeld, 2015.

MLA引文

Eckardt, Frank, Javier Ruiz Sanchez, and Frank Eckardt. City of Crisis. Bielefeld, 2015.

警告：这些引文格式不一定是100％准确.