APA (7th ed.) Citation

Hohl, R. (1977). Unsere Erde. Urania Verlag.

Chicago Style (17th ed.) Citation

Hohl, Rudolf. Unsere Erde. Leipzig: Urania Verlag, 1977.

MLA (8th ed.) Citation

Hohl, Rudolf. Unsere Erde. Urania Verlag, 1977.

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