Wium Olesen, Niels. “Nathaniel Hong: Sparks of Resistance. The Illegal Press in German Occupied Denmark April 1940 - August 1943. (Odense Universitetsforlag, 1996). XI + 308 S”. Historie/Jyske/Samlinger, nr. 1, januar 1998, s. 176, https://tidsskrift.dk/historiejyskesamling/article/view/37821.