Heingartner, R. W., & Bonnell, A. (2011). An American witness in Nazi Frankfurt: The diaries of Robert W. Heingartner, 1928-1937. Peter Lang.
Lua i Stíl Chicago (17ú heag.)Heingartner, Robert W., agus Andrew Bonnell. An American Witness in Nazi Frankfurt: The Diaries of Robert W. Heingartner, 1928-1937. Bern ; New York: Peter Lang, 2011.
Lua MLA (9ú heag.)Heingartner, Robert W., agus Andrew Bonnell. An American Witness in Nazi Frankfurt: The Diaries of Robert W. Heingartner, 1928-1937. Peter Lang, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.