Cita APA (7a ed.)

Roos, H., & Foster, J. (1966). A history of modern Poland: From the foundation of the State in the First World War to the present day. Eyre and Spottiswoode.

Cita Chicago Style (17a ed.)

Roos, Hans, y J.R Foster. A History of Modern Poland: From the Foundation of the State in the First World War to the Present Day. London: Eyre and Spottiswoode, 1966.

Cita MLA (9a ed.)

Roos, Hans, y J.R Foster. A History of Modern Poland: From the Foundation of the State in the First World War to the Present Day. Eyre and Spottiswoode, 1966.