James Oliver Goldsborough, The Paris Herald: A Novel, Easton Studio, 2014, Author's Note, [1]
Margaret Murányi Manchester, Western Corporations and Covert Operations in the Early Cold War: Re-examining the Vogeler/Sanders Case, Taylor & Francis, 2024, ch. 2, « Anglo-American Efforts to Release Vogeler and Sanders : "No lever powerful enough" » [2]
