Mohammed and Charlemagne : a revision.

MLA

Lopez, Roberto Sabatino. Mohammed and Charlemagne : a Revision. Cambridge, Mass.: Mediaeval Academy of America, 1943.

APA

Lopez, R. Sabatino. (1943). Mohammed and Charlemagne : a revision. Cambridge, Mass.: Mediaeval Academy of America.

Chicago

Lopez, Roberto Sabatino, Mohammed and Charlemagne : a Revision. Cambridge, Mass.: Mediaeval Academy of America, 1943.