APA Citation

Trachtenberg, H. L. (1905). 172. Three Conics Connected with a Triangle.

Chicago Style Citation

Trachtenberg, H. L. 172. Three Conics Connected With a Triangle. 1905.

MLA Citation

Trachtenberg, H. L. 172. Three Conics Connected With a Triangle. 1905.

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