APA (7th ed.) Citation

Lobachevski, N. (1914). Geometrical researches on the thoery of parallels. The Open Court.

Chicago Style (17th ed.) Citation

Lobachevski, Nicholas. Geometrical Researches on the Thoery of Parallels. La Salle. Illinois: The Open Court, 1914.

MLA (9th ed.) Citation

Lobachevski, Nicholas. Geometrical Researches on the Thoery of Parallels. The Open Court, 1914.

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