Não informado. (1973). Management Services in Government. Civil Service Department Great Britain.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Management Services in Government. London: Civil Service Department Great Britain, 1973.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Management Services in Government. Civil Service Department Great Britain, 1973.
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