David Johnston: Barr Is Confirmed on Voice Vote As 77th Attorney General of U.S. In: The New York Times. 21. November 1991, ISSN0362-4331 (nytimes.com [abgerufen am 26. September 2019]).
Ölpest: BP erwägt, zusätzliche Versiegelung des Bohrlochs zu stoppen. In: Spiegel Online. 13. August 2010 (spiegel.de [abgerufen am 26. September 2019]).
Graham Ruddick: Volkswagen hires BP oil spill lawyers to defend emissions cases. In: The Guardian. 23. September 2015, ISSN0261-3077 (theguardian.com [abgerufen am 26. September 2019]).
Tom Corrigan: Lawsuits Seek Millions From HSBC Following China Fishery Probe. In: Wall Street Journal. 2. Juli 2018, ISSN0099-9660 (wsj.com [abgerufen am 10. Oktober 2019]).
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David Johnston: Barr Is Confirmed on Voice Vote As 77th Attorney General of U.S. In: The New York Times. 21. November 1991, ISSN0362-4331 (nytimes.com [abgerufen am 26. September 2019]).
Graham Ruddick: Volkswagen hires BP oil spill lawyers to defend emissions cases. In: The Guardian. 23. September 2015, ISSN0261-3077 (theguardian.com [abgerufen am 26. September 2019]).
Tom Corrigan: Lawsuits Seek Millions From HSBC Following China Fishery Probe. In: Wall Street Journal. 2. Juli 2018, ISSN0099-9660 (wsj.com [abgerufen am 10. Oktober 2019]).