United States. Congressional-Executive Commission on China. (2009). The 20th anniversary of the Tiananmen Square protests examining the significance of the 1989 demonstrations in China and implications for U.S. policy : hearing before the Congressional-Executive Commission on China, One Hundred Eleventh Congress, first session, June 4, 2009: Examining the significance of the 1989 demonstrations in China and implications for U.S. policy : hearing before the Congressional-Executive Commission on China, One Hundred Eleventh Congress, first session, June 4, 2009. Washington: U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O..

United States. Congressional-Executive Commission on China. The 20th Anniversary of the Tiananmen Square Protests Examining the Significance of the 1989 Demonstrations in China and Implications for U.S. Policy : Hearing Before the Congressional-Executive Commission On China, One Hundred Eleventh Congress, First Session, June 4, 2009: Examining the Significance of the 1989 Demonstrations in China and Implications for U.S. Policy : Hearing Before the Congressional-Executive Commission On China, One Hundred Eleventh Congress, First Session, June 4, 2009. Washington: U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2009.

United States. Congressional-Executive Commission on China. The 20th Anniversary of the Tiananmen Square Protests Examining the Significance of the 1989 Demonstrations in China and Implications for U.S. Policy : Hearing Before the Congressional-Executive Commission On China, One Hundred Eleventh Congress, First Session, June 4, 2009: Examining the Significance of the 1989 Demonstrations in China and Implications for U.S. Policy : Hearing Before the Congressional-Executive Commission On China, One Hundred Eleventh Congress, First Session, June 4, 2009. Washington: U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2009.