APA (7th ed.) Citation

Stumpff, K. (1957). Astronomie Das Fischer-Lexikon.

Chicago Style (17th ed.) Citation

Stumpff, Karl. "Astronomie." Das Fischer-Lexikon 1957.

MLA (9th ed.) Citation

Stumpff, Karl. "Astronomie." Das Fischer-Lexikon, 1957.

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