APA (7th ed.) Zitazioa

Horn, K. H. (1967). Productivity , Concepts and Measurement. The Institute of National Planning.

Chicago Style (17th ed.) Zitazioa

Horn, Karl Heinz. Productivity , Concepts and Measurement. Cairo: The Institute of National Planning, 1967.

MLA (9th ed.) Zitazioa

Horn, Karl Heinz. Productivity , Concepts and Measurement. The Institute of National Planning, 1967.

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