2013 National Black Ribbon Day Commemoration events announced, eesti.ca Jānis Škapars, The Baltic Way to Freedom: Non-violent Struggle of the Baltic States in a Global Context, Zelta Grauds, 2005, ISBN 9984986306 "European hearing on crimes committed by totalitarian regimes".
Truy cập ngày 23 tháng 8 năm 2011.  ^ 2013 National Black Ribbon Day Commemoration events announced, eesti.ca ^ Jānis Škapars, The Baltic Way to Freedom: Non-violent Struggle of the Baltic States in a Global Context, Zelta Grauds, 2005, ISBN 9984986306 ^ “European hearing on crimes committed by totalitarian regimes”.