Levin, E. (1987). Witnesses in arbitration: Selection, preparation and presentation. The Bureau of National Affairs.
Lua i Stíl Chicago (17ú heag.)Levin, Edward. Witnesses in Arbitration: Selection, Preparation and Presentation. Washington, D.C: The Bureau of National Affairs, 1987.
Lua MLA (9ú heag.)Levin, Edward. Witnesses in Arbitration: Selection, Preparation and Presentation. The Bureau of National Affairs, 1987.
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