APA (7th ed.) Citation

Barclay, G. S. J. (1973). The rise and fall of the new Roman empire.

Chicago Style (17th ed.) Citation

Barclay, Glen St. John. The Rise and Fall of the New Roman Empire. 1973.

MLA (9th ed.) Citation

Barclay, Glen St. John. The Rise and Fall of the New Roman Empire. 1973.

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