APA (7th ed.) Citation

Pirenne, H. (1955). Mohammed and Charlemagne. Barnes & Noble.

Chicago Style (17th ed.) Citation

Pirenne, Henri. Mohammed and Charlemagne. New York: Barnes & Noble, 1955.

MLA (9th ed.) Citation

Pirenne, Henri. Mohammed and Charlemagne. Barnes & Noble, 1955.

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