Não informado. (1973). American Journal of Political Science. Midwest Political Science Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. American Journal of Political Science. Austin, Tex: Midwest Political Science Association, 1973.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. American Journal of Political Science. Midwest Political Science Association, 1973.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.