Cita APA (7a ed.)

Heingartner, R. W., & Bonnell, A. (2011). An American witness in Nazi Frankfurt: The diaries of Robert W. Heingartner, 1928-1937. Peter Lang.

Cita Chicago Style (17a ed.)

Heingartner, Robert W., y Andrew Bonnell. An American Witness in Nazi Frankfurt: The Diaries of Robert W. Heingartner, 1928-1937. Bern ; New York: Peter Lang, 2011.

Cita MLA (9a ed.)

Heingartner, Robert W., y Andrew Bonnell. An American Witness in Nazi Frankfurt: The Diaries of Robert W. Heingartner, 1928-1937. Peter Lang, 2011.