灰色宣傳

灰色宣傳是心理戰技巧的一種，它是指將通過把來源偽裝成第三方來發布信息的方式^[1]。

例子

1978年12月19日，《中央日報》的副刊刊登了一個叫做「阮天仇」的越南難民的絕筆，上面寫到了阮天仇的大哥死在越戰的炮火中，侄兒在一場暴動中被流彈射死，九十三歲的老祖母與與七歲的侄女被越共「照顧」到餓死，絕口不提政治的父親，卻在鬥爭大會上被一棒一棒地打到死，三哥因為飢餓，忍不住吃了一個甘薯，結果被槍斃，大嫂死在監獄中，母親在逃亡的時候被匪幹推下海淹死，妻子逃亡在海上，結果被海盜射殺。剩下阮天仇與兒子文星，船在怒濤上飄流，難民們漂到一個珊瑚礁上，但兒子文星在第十三天痛苦地死去，其屍體也陸續被難民吃完，吃了文星的難民也陸續死亡，最後阮天仇也在珊瑚礁上等死，到了第四十二天之後才死亡。2003年，本文的「翻譯者」朱桂於承認「阮天仇」為虛構的人物，《南海血書》是為其所編造，其目的為醜化共產主義的形象。

Stamps as War – and Propaganda Forgeries（頁面存檔備份，存於網際網路檔案館）: This Website shows almost all officially issued War- and Propaganda forgeries. It also shows the real stamps which was the template for the forgery.
Sefton Delmer – Black Boomerang （頁面存檔備份，存於網際網路檔案館）: Sefton Delmer was head of British Black Propaganda during World War II. His book Black Boomerang tells the story of his work.
PsyWar.Org – Black Propaganda and propaganda leaflets database （頁面存檔備份，存於網際網路檔案館）: A website with various articles on black propaganda and psychological warfare. The site has an extensive library of propaganda leaflets from World War I to the present day.
WW2 propaganda leaflets: A website about airdropped, shelled or rocket fired propaganda leaflets. Has slideshow with many black propaganda leaflets of World War II.
Gray and Black Radio Propaganda against Nazi Germany （頁面存檔備份，存於網際網路檔案館） Extensively illustrated paper describing the Allied effort in WW II to undermine Germany through unidentified or misidentified radio broadcasts.
Office of Strategic Influence （頁面存檔備份，存於網際網路檔案館） at SourceWatch