Le Grand, J., & Robinson, R. (1976). The economics of social problems. Macmillan.
Cita Chicago (17th ed.)Le Grand, Julian, i Ray Robinson. The Economics of Social Problems. London: Macmillan, 1976.
Cita MLA (9th ed.)Le Grand, Julian, i Ray Robinson. The Economics of Social Problems. Macmillan, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.