APA (7th ed.) Citation

Schildt, A., Siegfried, D., & Siegfried, D. (2005). European cities, youth and the public sphere in the twentieth century. Ashgate.

Chicago Style (17th ed.) Citation

Schildt, Axel, Detlef Siegfried, and Detlef Siegfried. European Cities, Youth and the Public Sphere in the Twentieth Century. Aldershot, Hampshire [u.a.]: Ashgate, 2005.

MLA (8th ed.) Citation

Schildt, Axel, et al. European Cities, Youth and the Public Sphere in the Twentieth Century. Ashgate, 2005.