APA (7th ed.) Citation

Ahnert, P. (1969). Astronomie 10. Volk und Wissen.

Chicago Style (17th ed.) Citation

Ahnert, Paul. Astronomie 10. Berlin: Volk und Wissen, 1969.

MLA (8th ed.) Citation

Ahnert, Paul. Astronomie 10. Volk und Wissen, 1969.

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