Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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