APA (7th ed.) Citation

Sullivan, R. E. (1963). Aix-la-Chapelle in the age of Charlemagne. University of Oklahoma Press.

Chicago Style (17th ed.) Citation

Sullivan, Richard Eugene. Aix-la-Chapelle in the Age of Charlemagne. Norman,: University of Oklahoma Press, 1963.

MLA (8th ed.) Citation

Sullivan, Richard Eugene. Aix-la-Chapelle in the Age of Charlemagne. University of Oklahoma Press, 1963.

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