Lua APA (7ú heag.)

Prokopenko, J. (1987). Productivity management: A practical handbook. International Labour Office.

Lua i Stíl Chicago (17ú heag.)

Prokopenko, Joseph. Productivity Management: A Practical Handbook. Geneva: International Labour Office, 1987.

Lua MLA (8ú heag.)

Prokopenko, Joseph. Productivity Management: A Practical Handbook. International Labour Office, 1987.

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