APA (7th ed.) Citation

Barclay, G. S. (1971). Twentieth century nationalism. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Barclay, Glen S. Twentieth Century Nationalism. London: Weidenfeld and Nicolson, 1971.

MLA (9th ed.) Citation

Barclay, Glen S. Twentieth Century Nationalism. Weidenfeld and Nicolson, 1971.

Warning: These citations may not always be 100% accurate.