APA (7th ed.) Citation

Engert, M. (2026). (438) Labour Productivity in Planning. معهد التخطيط القومى.

Chicago Style (17th ed.) Citation

Engert, Manfred. (438) Labour Productivity in Planning. معهد التخطيط القومى, 2026.

MLA (9th ed.) Citation

Engert, Manfred. (438) Labour Productivity in Planning. معهد التخطيط القومى, 2026.

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