Cita APA (7a ed.)

Sauvain, P. (1996). Key themes of the twentieth century (1. publ.). Thornes.

Cita Chicago Style (17a ed.)

Sauvain, Philip. Key Themes of the Twentieth Century. 1. publ. Cheltenham: Thornes, 1996.

Cita MLA (9a ed.)

Sauvain, Philip. Key Themes of the Twentieth Century. 1. publ. Thornes, 1996.