APA (7th ed.) Citation

Greenhalgh, P. A. L. (1975). The year of the four emperors. Barnes & Noble Books.

Chicago Style (17th ed.) Citation

Greenhalgh, P. A. L. The Year of the Four Emperors. New York: Barnes & Noble Books, 1975.

MLA (9th ed.) Citation

Greenhalgh, P. A. L. The Year of the Four Emperors. Barnes & Noble Books, 1975.

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