Eckert, G. (1978). Freude am Wandern: Gerhard Eckert. Herder.
Cita Chicago (17th ed.)Eckert, Gerhard. Freude Am Wandern: Gerhard Eckert. Freiburg [u.a.]: Herder, 1978.
Cita MLA (8th ed.)Eckert, Gerhard. Freude Am Wandern: Gerhard Eckert. Herder, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.