Cita APA (7th ed.)
Heuss, T., Becker, E. W., Vogt, M., & Werner, W. (2013). Der Bundesprasident: Briefe 1954-1959. De Gruyter.
Cita Chicago (17th ed.)
Heuss, Theodor, Ernst Wolfgang Becker, Martin Vogt, i Wolfram Werner. Der Bundesprasident: Briefe 1954-1959. Berlin: De Gruyter, 2013.
Cita MLA (9th ed.)
Heuss, Theodor, et al. Der Bundesprasident: Briefe 1954-1959. De Gruyter, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.