Não informado. (1973). Teaching political science. Heldref Publications.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Teaching Political Science. Washington: Heldref Publications, 1973.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Teaching Political Science. Heldref Publications, 1973.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.