APA (7th ed.) Citation

Heiland, F. (1953). Die kleinen Planeten. Zeiss-Planetarium.

Chicago Style (17th ed.) Citation

Heiland, Fritz. Die Kleinen Planeten. Jena: Zeiss-Planetarium, 1953.

MLA (9th ed.) Citation

Heiland, Fritz. Die Kleinen Planeten. Zeiss-Planetarium, 1953.

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