Wilkinson, A. (1971). Information for managers: A practical approach. Pitman.
Lua i Stíl Chicago (17ú heag.)Wilkinson, Alan. Information for Managers: A Practical Approach. London: Pitman, 1971.
Lua MLA (9ú heag.)Wilkinson, Alan. Information for Managers: A Practical Approach. Pitman, 1971.
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