APA (7th ed.) Citation

Gierke, O. v., & Freyd, B. (1939). The development of political theory ("First edition.".). W. W. Norton.

Chicago Style (17th ed.) Citation

Gierke, Otto von, and Bernard Freyd. The Development of Political Theory. "First edition.". New York: W. W. Norton, 1939.

MLA (9th ed.) Citation

Gierke, Otto von, and Bernard Freyd. The Development of Political Theory. "First edition.". W. W. Norton, 1939.