Halford, D. R. C. (1971). Business planning: A practical guide for management. David and Charles.
Chicago-viite (17. p.)Halford, David Reece Charles. Business Planning: A Practical Guide for Management. Newton Abbot: David and Charles, 1971.
MLA-viite (8. p.)Halford, David Reece Charles. Business Planning: A Practical Guide for Management. David and Charles, 1971.
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