APA (7th ed.) Citation

Barclay, G. S. J. (1971). 20th century nationalism.

Chicago Style (17th ed.) Citation

Barclay, Glen St. John. 20th Century Nationalism. 1971.

MLA (9th ed.) Citation

Barclay, Glen St. John. 20th Century Nationalism. 1971.

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