Hegen, H. (1990). Mosaik - Die Digedags in den Rocky Mountains. Verlag Junge Welt.
Cita Chicago (17th ed.)Hegen, Hannes. Mosaik - Die Digedags in Den Rocky Mountains. Berlin: Verlag Junge Welt, 1990.
Cita MLA (8th ed.)Hegen, Hannes. Mosaik - Die Digedags in Den Rocky Mountains. Verlag Junge Welt, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.