APA (7th ed.) Citation

Geisenheimer, L. (1869). Ueber sphaerische Kegelschnitte.

Chicago Style (17th ed.) Citation

Geisenheimer, Leopold. Ueber Sphaerische Kegelschnitte. 1869.

MLA (9th ed.) Citation

Geisenheimer, Leopold. Ueber Sphaerische Kegelschnitte. 1869.

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