APA (7th ed.) Citation

Schnaß, F., & Wilckens, R. Erdkundliches Quellenbuch. A.W. Zickfeldt, Verlag.

Chicago Style (17th ed.) Citation

Schnaß, Franz, and Rudolf Wilckens. Erdkundliches Quellenbuch. Osterwieck am Harz: A.W. Zickfeldt, Verlag.

MLA (9th ed.) Citation

Schnaß, Franz, and Rudolf Wilckens. Erdkundliches Quellenbuch. A.W. Zickfeldt, Verlag.

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