Cita APA (7th ed.)
Carr, J., & Hausner, H. E. (1986). Helmut Schmidt: Helmut Schmidt, helmsman of Germany. Econ Verl.
Cita Chicago (17th ed.)
Carr, Jonathan, i Hans E. Hausner. Helmut Schmidt: Helmut Schmidt, Helmsman of Germany. Düsseldorf, Wien: Econ Verl, 1986.
Cita MLA (9th ed.)
Carr, Jonathan, i Hans E. Hausner. Helmut Schmidt: Helmut Schmidt, Helmsman of Germany. Econ Verl, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.