Não informado. (1982). Contributions to Political Economy. Academic Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Contributions to Political Economy. London: Academic Press, 1982.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Contributions to Political Economy. Academic Press, 1982.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.