Cita APA

Campbell, J. (1937). Spain's "left" critics. Communist Party of Great Britain [1920-].

Citación estilo Chicago

Campbell, J.R. Spain's "Left" Critics. London: Communist Party of Great Britain [1920-], 1937.

Cita MLA

Campbell, J.R. Spain's "Left" Critics. Communist Party of Great Britain [1920-], 1937.