APA (7th ed.) Citation

Lichtman, A. I. (2012). The first theorem of Andrey Roiter.

Chicago Style (17th ed.) Citation

Lichtman, A. I. The First Theorem of Andrey Roiter. 2012.

MLA (8th ed.) Citation

Lichtman, A. I. The First Theorem of Andrey Roiter. 2012.

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