Cita APA (7th ed.)

Gierke, O. F. v. (1996). Political theories of the Middle Age. Thoemmes Press.

Cita Chicago (17th ed.)

Gierke, Otto Friedrich von. Political Theories of the Middle Age. Bristol, Eng: Thoemmes Press, 1996.

Cita MLA (9th ed.)

Gierke, Otto Friedrich von. Political Theories of the Middle Age. Thoemmes Press, 1996.