APA ציטוט

Lobachevski, N. (1914). Geometrical researches on the theory of parallels. Open Court Publishing Company.

Chicago Style (17th ed.) Citation

Lobachevski, Nicholas. Geometrical Researches on the Theory of Parallels. LaSalle: Open Court Publishing Company, 1914.

ציטוט MLA

Lobachevski, Nicholas. Geometrical Researches on the Theory of Parallels. Open Court Publishing Company, 1914.