Kempner, T., & Wills, G. S. C. (1967). Bradford exercises in management 1-12. Nelson.
Chicago-čujuhus (17. p.)Kempner, Thomas, juo Gordon S. C. Wills. Bradford Exercises in Management 1-12. London: Nelson, 1967.
MLA-čujuhus (9. p.)Kempner, Thomas, juo Gordon S. C. Wills. Bradford Exercises in Management 1-12. Nelson, 1967.
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