the U.S. Senate as Next U.S. Ambassador to Japan. United States government. U.S. Embassy & Consulates in Japan. 2021-12-22 [2022-01-08]. (原始内容存档于2022-01-02)
Groundbreaking Ceremony for the Construction of the Neak Loeung Bridge, a Grant Aid Provided by the GovernmentofJapan. 12 February 2011 [1 January 2015]. (原始内容存档于2015-01-01)
Highlighting JAPAN > Sixty Years ofJapan's ODA > Ring of Protection: Japanese breakwaters protected capital from large tsunami | Cabinet Office, Governmentof Japan