Harman, N. (1968). Trade Unions. London: The Economist Newspaper.
Cita Chicago (17th ed.)Harman, Nicholas. Trade Unions. London: The Economist Newspaper, 1968.
Cita MLA (8th ed.)Harman, Nicholas. Trade Unions. London: The Economist Newspaper, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.