APA (7th ed.) Citation

Folz, R. (1969). The concept of empire in Western Europe from the fifth to the fourteenth century. Arnold.

Chicago Style (17th ed.) Citation

Folz, Robert. The Concept of Empire in Western Europe from the Fifth to the Fourteenth Century. London: Arnold, 1969.

MLA (9th ed.) Citation

Folz, Robert. The Concept of Empire in Western Europe from the Fifth to the Fourteenth Century. Arnold, 1969.