Tworek, H. J. S. (2019). News from Germany: The competition to control world communications, 1900 - 1945 / Heidi J. S. Tworek. Harvard University Press.
Chicago-viite (17. p.)Tworek, Heidi J. S. News from Germany: The Competition to Control World Communications, 1900 - 1945 / Heidi J. S. Tworek. Cambridge [u.a.]: Harvard University Press, 2019.
MLA-viite (8. p.)Tworek, Heidi J. S. News from Germany: The Competition to Control World Communications, 1900 - 1945 / Heidi J. S. Tworek. Harvard University Press, 2019.
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