APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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