APA (7e ed.) Bronvermelding

Gierke, O. F. v. (1966). The development of political theory. Howard Fertig.

Chicago (17e ed.) Bronvermelding

Gierke, Otto Friedrich von. The Development of Political Theory. New York: Howard Fertig, 1966.

MLA (9e ed.) Bronvermelding

Gierke, Otto Friedrich von. The Development of Political Theory. Howard Fertig, 1966.