SPEIGHT, H. (1967). Economics and industrial efficiency: An introduction to managerial economics. Macmillan.
Tohutoru Kātū Chicago (17th ed.)SPEIGHT, H. Economics and Industrial Efficiency: An Introduction to Managerial Economics. London: Macmillan, 1967.
Tohutoro MLA (9th ed.)SPEIGHT, H. Economics and Industrial Efficiency: An Introduction to Managerial Economics. Macmillan, 1967.
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