APA (7th ed.) Citation

Claus, G. (1977). Sportliches Wandern. Sportverlag.

Chicago Style (17th ed.) Citation

Claus, Gerhard. Sportliches Wandern. Berlin: Sportverlag, 1977.

MLA (8th ed.) Citation

Claus, Gerhard. Sportliches Wandern. Sportverlag, 1977.

Warning: These citations may not always be 100% accurate.