Jens, W. (1989). Bp - Ck. Kindler.
Cita Chicago (17th ed.)Jens, Walter. Bp - Ck. Berlin: Kindler, 1989.
Cita MLA (8th ed.)Jens, Walter. Bp - Ck. Kindler, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)