Cita APA (7a ed.)

ebrary, Inc, Whyte, I. B., & Frisby, D. Metropolis Berlin: 1880-1940.

Cita Chicago Style (17a ed.)

ebrary, Inc, Iain Boyd Whyte, y David Frisby. Metropolis Berlin: 1880-1940.

Cita MLA (9a ed.)

ebrary, Inc, et al. Metropolis Berlin: 1880-1940.