(en) William E. Duff, A time for spies : Theodore Stephanovich Mally and the era of the great illegals, Nashville, Vanderbilt University Press, , 249 p., relié (ISBN978-0-8265-1352-6, lire en ligne), p. 58
(en) Elisabeth K. Poretsky, Our Own People : A Memoir of "Ignace Reiss" and His Friends, Londres, Oxford University Press, (lire en ligne), p. 1–2 (Letter), 7–26 (Childhood), 27–36 (Polish Party), 37–52 (Lwow), 53–71 (Berlin/Vienna), 72-85 (Prague/Amsterdam), 86-129 (Moscow), 103-107 (Richard Sorge), 130-155 (Europe), 156-207 (Moscow), 208-226 (Switzerland), 243-270 (Afterward), 271-274 (Epilogue)