Não informado. (1980). History of Political Thought. Imprint Academic.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. History of Political Thought. Exeter, Inglaterra: Imprint Academic, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. History of Political Thought. Imprint Academic, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.