APA (7th ed.) Citation

Siegner, O. (1980). Graubüncen. Grisons.

Chicago Style (17th ed.) Citation

Siegner, Otto. Graubüncen. Grisons. 1980.

MLA (9th ed.) Citation

Siegner, Otto. Graubüncen. Grisons. 1980.

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