APA aipamena

Levinson, C. (1972). International trade unionism. London: George Allen & Unwin Ltd.

Chicago Style aipamena

Levinson, Charles. International Trade Unionism. London: George Allen & Unwin Ltd, 1972.

MLA aipamena

Levinson, Charles. International Trade Unionism. London: George Allen & Unwin Ltd, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.