Smith, A. (1971). Concepts of labor force underutilisation. International Labour Office.
Cita Chicago (17th ed.)Smith, A.D. Concepts of Labor Force Underutilisation. Geneva: International Labour Office, 1971.
Cita MLA (9th ed.)Smith, A.D. Concepts of Labor Force Underutilisation. International Labour Office, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.