Prokopenko, J. (1987). Productivity management: A practical handbook. International Labour Office.
Čikaški stil citiranja (17. izdanje)Prokopenko, Joseph. Productivity Management: A Practical Handbook. Geneva: International Labour Office, 1987.
MLA način citiranja (8. izdanje)Prokopenko, Joseph. Productivity Management: A Practical Handbook. International Labour Office, 1987.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.