Proud, A. (2000). Choosing and using external consultants: How to get the best value from working with your external consultants. Fenman.
Citace podle Chicago (17th ed.)Proud, Arthur. Choosing and Using External Consultants: How to Get the Best Value from Working with Your External Consultants. Ely: Fenman, 2000.
Citace podle MLA (8th ed.)Proud, Arthur. Choosing and Using External Consultants: How to Get the Best Value from Working with Your External Consultants. Fenman, 2000.
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