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3. Baker Paul Michael S.Schmidt andMaggieHaberman.2020. “Republican Senators Tried to Stop Trump From Firing Impeachment Witness.”New York Times February 14.https://www.nytimes.com/2020/02/08/us/politics/trump‐vindman‐sondland‐fired.html.
4. Determinants of Bureaucratic Turnover Intention: Evidence from the Department of the Treasury
5. Management Style as Strategic Interaction: The Case of Governor Ronald Reagan