Prokopenko, J. (1987). Productivity management: A practical handbook. International Labour Office.
Citazione stile Chigago Style (17a edizione)Prokopenko, Joseph. Productivity Management: A Practical Handbook. Geneva: International Labour Office, 1987.
Citatione MLA (8a ed.)Prokopenko, Joseph. Productivity Management: A Practical Handbook. International Labour Office, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.