Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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