Cita APA

Schroeder, P. W. (1919). World War I as galloping gertie. The outbreak of World War I.

Citación estilo Chicago

Schroeder, Paul W. "World War I as Galloping Gertie." The Outbreak of World War I 1919.

Cita MLA

Schroeder, Paul W. "World War I as Galloping Gertie." The Outbreak of World War I, 1919.