互联网档案馆的存檔,存档日期24 September 2015.. OSCE. 14 January 2015 U.S. Ambassador to Ukraine GeoffreyPyatt and U.S. Ambassador to the OSCE Daniel Baer Travel to Donetsk Oblast
Ukrainian-US relations, Interfax-Ukraine (15 August 2013) Welcome, Mr. Pyatt! (页面存档备份,存于互联网档案馆), Den (5 August 2013) President Obama Announces More Key
Reuters. 2014-04-13 [2020-03-08]. (原始内容存档于2014-04-13). Q&A with US Amb. GeoffreyPyatt: Ukraine Crisis Escalates as War Fears Grow. Voice of America. 2014-04-14