Richter, I. (1973). Political purpose in trade unions. Allen & Unwin.
Chicago Style aipamenaRichter, Irvig. Political Purpose in Trade Unions. London: Allen & Unwin, 1973.
MLA aipamenaRichter, Irvig. Political Purpose in Trade Unions. Allen & Unwin, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.