APA (7th ed.) Citation

Gierke, O. v., & Maitland, F. W. (1900). Political theories of the middle age. University Press.

Chicago Style (17th ed.) Citation

Gierke, Otto von, and Frederic William Maitland. Political Theories of the Middle Age. Cambridge [England]: University Press, 1900.

MLA (9th ed.) Citation

Gierke, Otto von, and Frederic William Maitland. Political Theories of the Middle Age. University Press, 1900.